Release 3 Changes Overview for UK Link Implementation

 
U
K
 
L
i
n
k
 
R
e
l
e
a
s
e
 
3
S
e
s
s
i
o
n
 
1
 
1
 
I
n
t
r
o
d
u
c
t
i
o
n
 
a
n
d
 
P
u
r
p
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e
 
o
f
 
D
o
c
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e
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t
 
2
 
Subsequent to Nexus project and the UK Link implementation 
in 
2017, additional
requirements have been agreed 
with 
the industry are these organised into a development
programme and are applied in scheduled
 
releases.
This document 
will 
provide 
you with 
the Release 3 changes 
which 
are due to go live in
November 2018. This pack 
will 
provide an overview of the impacted process, alongside
exploring the specific impacts and 
will 
highlight the changes in a practical
 
manner.
The changes for release 3 has been broken 
down 
into 4 parts (detailed on next slide).
Session 1 
will 
look at the changes surrounding read submission. The Primary impacts 
will 
be
Shippers and Daily Metered Service Providers (DMSP), read submission has a downstream
impact on process such as AQ Review and reconciliation.
 
.
More information can be found on Xoserve.com
 
here
.
 
L
i
s
t
 
o
f
 
a
l
l
 
C
h
a
n
g
e
s
 
X
R
N
3
6
5
6
 
&
 
4
6
5
8
 
R
e
a
d
 
V
a
l
i
d
a
t
i
o
n
 
T
o
l
e
r
a
n
c
e
X
R
N
4
4
9
5
 
E
n
e
r
g
y
 
T
o
l
e
r
a
n
c
e
 
R
e
j
e
c
t
i
o
n
 
C
o
d
e
X
R
N
4
4
3
1
 
R
e
a
d
s
 
F
a
i
l
e
d
 
M
a
r
k
e
t
 
B
r
e
a
k
e
r
 
T
o
l
e
r
a
n
c
e
XRN4481 Resolution of Penny
 
Mismatches
XRN4458 Class 4 CSEPS Recon. Variance
 
ID
 
XRN4534 Amendment to 
RGMA 
Rules for MTR Install
 
Date
XRN4453 File Format Should have
 
Changes
 
XRN4443 File Format Changes Aug 16 Unique Sites (deferred items from
 
CR252)
XRN4539 New File Level
 
Rejection
XRN4273 Installed Status of Failed
 
MOD614
XRN4337 To change the optionality of the Supply Point confirmation reference for
the T51
 
file
XRN4486 Meter 
Type 
O = Orifice to be an acceptable value 
in 
file formats
 
and
reports
XRN4538 Insertion of Maximum Number of Occurrences in
 
MID
 
Changes
 
covered
in this
 
pack
 
Session
 
2
 
Education
Pack
 
1
 
Education
Pack
 
2
 
R
e
a
d
 
S
u
b
m
i
s
s
i
o
n
 
p
r
o
c
e
s
s
 
Read
Sub
m
i
tt
ed
 
Read submission varies by
 
class
 
Read
Valida
te
d
 
File format validated 
in 
numerous
 
ways
Read now validated based on energy
 
history
 
AQ
 
process
triggered
 
Revised AQ process could be triggered based
 
on
provision of new
 
read
 
Re
c
on
c
ilia
t
i
on
triggered
 
Reconciliation process could be triggered based
on provision of new
 
read
 
High level overview which will be used through the
 
pack.
Reads submitted by Shipper or
 
DMSP
 
F
i
l
e
 
F
o
r
m
a
t
 
P
r
o
c
e
s
s
 
F
l
o
w
 
 
Shipper/DMSP
S
u
b
m
i
t
s
 
r
e
a
d
 
 
F
i
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e
 
L
e
v
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V
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i
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a
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y
f
o
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f
u
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t
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r
 
p
r
o
c
e
s
s
i
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g
 
 
U
K
 
L
i
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k
F
u
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i
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a
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V
a
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i
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:
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c
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a
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(
e
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y
)
 
 
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.
 
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i
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a
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v
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i
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o
 
t
h
r
e
e
 
l
e
v
e
l
s
:
Read 
Submission 
Validation 
– Checks the 
validity 
in terms of
 
the
Shipper/DMSP 
who 
submit 
the 
reads 
& submission
 
window.
Asset Checks 
Validation 
Validates 
the current asset details
 
held
on 
UK 
Link against the data 
received 
in the read
 
files
R
e
a
d
 
V
a
l
i
d
a
t
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o
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V
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c
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c
k
s
 
 
R
e
s
p
o
n
s
e
 
F
i
l
e
s
C
l
a
s
s
 
1
 
&
 
2
:
 
a
c
c
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p
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e
d
/
 
r
e
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c
t
e
d
a
n
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e
s
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i
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a
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C
l
a
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3
 
&
 
4
:
a
c
c
e
p
t
e
d
/
r
e
j
e
c
t
e
d
 
 
T
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A
Q
 
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p
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.
 
R
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a
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S
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b
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C
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a
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1
 
m
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p
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:
 
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D
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+
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3
 
m
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p
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:
 
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n
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(
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4
 
m
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n
b
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M
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t
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a
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(
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)
f
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s
.
 
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f
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,
 
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a
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y
e
a
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y
e
a
r
l
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.
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o
r
 
a
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l
 
c
l
a
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r
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a
d
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c
a
n
 
a
l
s
o
 
b
e
 
o
b
t
a
i
n
e
d
Via 
the 
RGMA 
process on the ONJOB and 
ONUPD
 
files
Through
 
the
 
site
 
visit 
process
 
(SFN
 
file
 
for
 
class
 
3&4
 
and
 
Portal
 
for
 
class
 
1&2)
T
h
o
u
g
h
 
t
h
e
 
A
Q
 
c
o
r
r
e
c
t
i
o
n
 
p
r
o
c
e
s
s
 
X
R
N
4
4
3
1
 
(
s
e
e
 
s
l
i
d
e
 
1
7
 
f
o
r
 
m
o
r
e
 
d
e
t
a
i
l
)
 
F
i
l
e
 
l
e
v
e
l
 
V
a
l
i
d
a
t
i
o
n
 
As the files are subject to file level validation. Any discrepancies in the file formats 
will 
result in
 
a
rejection. The originator will need to correct the error and resend the
 
file.
 
To 
help reduce the number of rejections 
File
 
formats are available on
 
Xoserve.com
 
Ensure all fields are completed using the key
 
below.
 
R
e
a
d
 
V
a
l
i
d
a
t
i
o
n
:
 
E
n
e
r
g
y
 
T
o
l
e
r
a
n
c
e
 
c
h
e
c
k
 
 
Read
 
 
Energy
 
(kWh)
 
Inner
T
olerance
 
Outer
T
o
l
eran
c
e
 
I
n
n
e
r
T
o
l
e
r
a
n
c
e
B
r
e
a
c
h
R
e
a
d
 
O
n
l
y
Accepted
 
with
Override
 
Flag*
 
B
e
l
o
w
I
n
n
e
r
T
o
l
e
r
a
n
c
e
R
e
a
d
A
c
c
e
p
t
e
d
(
N
o
t
 
i
f
f
l
a
g
g
e
d
)
 
O
u
t
e
r
T
o
l
e
r
a
n
c
e
B
r
e
a
c
h
R
e
a
d
R
e
j
e
c
t
e
d
 
 
The system 
calculates the energy and then checks
 
the
energy against permitted tolerance for the
 
AQ 
band.
Where 
the energy falls below the inner tolerance
 
level,
the read is
 
accepted.
If the inner tolerance is 
exceeded 
but below the outer
tolerance (market breaker), the Shipper can 
override
the breach using the 
override 
flag and the read 
will
 
be
accepted.
To 
prevent 
bulk 
override where 
the 
override Flag 
is set,
but the energy has not breached the inner tolerance,
then the read is
 
rejected.
If
 
the
 
outer
 
tolerance
 
is
 
breached,
 
then
 
the
 
read
 
is
always
 
rejected.
 
 
*Where do I
 
input
 
override Flag
 
?
See 
next
 
slide
 
 
Once the 
Read 
Submission 
Validation 
and Asset Checks
 
have 
been
 
s
u
c
c
e
s
s
f
u
l
l
y
 
p
a
s
s
e
d
 
U
K
 
L
i
n
k
 
t
h
e
n
 
p
e
r
f
o
r
m
s
 
e
n
e
r
g
y
 
t
o
l
e
r
a
n
c
e
 
c
h
e
c
k
s
.
 
I
n
p
u
t
t
i
n
g
 
T
o
l
e
r
a
n
c
e
 
F
l
a
g
 
o
n
 
R
e
a
d
 
F
i
l
e
 
f
o
r
m
a
t
s
 
File
 
formats can be found on Xoserve.com on the link
 
attached.
The 
field relating to the tolerance flag is 
shown 
on the 
various 
read file formats
 
as -
Key
 
The 
description states tolerance 
override 
flag currently has 
two allowable values only: 
Blank and 
Y. 
Y
 
is
confirming
 
that
 
that
 
the
 
read
 
is
 
higher
 
than
 
the
 
lower
 
tolerance
 
but
 
is
 
correct.
 
X
R
N
4
4
9
5
 
-
 
E
n
e
r
g
y
 
T
o
l
e
r
a
n
c
e
 
R
e
j
e
c
t
i
o
n
 
C
o
d
e
 
 
T
h
i
s
 
c
h
a
n
g
e
 
d
o
e
s
 
n
o
t
 
c
h
a
n
g
e
 
t
h
e
 
w
a
y
 
t
h
e
 
f
l
a
g
 
i
s
 
a
d
d
e
d
,
 
o
n
l
y
 
t
h
a
t
 
i
t
 
w
a
s
i
d
e
n
t
i
f
i
e
d
 
t
h
a
t
 
t
h
e
r
e
 
w
e
r
e
 
i
n
s
t
a
n
c
e
s
 
w
h
e
r
e
 
t
h
e
 
v
a
l
u
e
 
o
f
 
N
 
h
a
s
 
b
e
e
n
 
p
r
o
v
i
d
e
d
 
i
n
 
t
h
i
s
 
f
i
e
l
d
 
a
n
d
 
t
h
i
s
 
h
a
d
 
b
e
e
n
 
a
c
c
e
p
t
e
d
 
a
n
d
 
i
s
s
u
e
d
 
i
n
t
h
e
 
t
r
a
n
s
f
e
r
 
r
e
a
d
 
n
o
t
i
f
i
c
a
t
i
o
n
 
f
i
l
e
s
.
This 
change 
will 
ensure 
that 
any 
incoming 
read requests received 
(from Shippers 
and DMSPs) with a 
Tolerance 
Override Flag
value 
other than 
‘Y’ 
or 
blank 
will 
be rejected 
with 
new 
rejection
 
codes.
MRE01038 
‘Non 
allowable value 
in Tolerance Override Flag’ 
will 
be used 
for
 
Shippers.
TOL00009- 
‘Non 
allowable value 
in Tolerance Override Flag’ 
will 
be 
used 
for
 
DMSPs
.
 
C
u
r
r
e
n
t
 
T
o
l
e
r
a
n
c
e
s
 
f
o
r
 
C
l
a
s
s
 
3
&
4
 
M
e
t
e
r
 
P
o
i
n
t
s
 
The 
following 
table 
details 
the 
validation 
bands 
that 
will 
be applied 
for 
each 
of the AQ 
Bands 
for 
Class 3 &4
 
sites.
 
C
u
r
r
e
n
t
 
T
o
l
e
r
a
n
c
e
s
 
f
o
r
 
C
l
a
s
s
 
1
 
&
 
2
 
M
e
t
e
r
 
P
o
i
n
t
s
 
The 
following 
table 
details 
the 
validation 
bands 
that 
will 
be applied 
for 
each 
of the SOQ 
Bands 
for 
Class 1 
& 
2
 
sites.
 
N
e
w
 
T
o
l
e
r
a
n
c
e
s
 
f
o
r
 
C
l
a
s
s
 
3
 
&
 
4
 
M
e
t
e
r
 
P
o
i
n
t
s
 
o
n
l
y
 
X
R
N
3
6
5
6
 
&
 
X
R
N
4
6
5
8
 
R
e
a
d
 
V
a
l
i
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o
w
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e
 
t
w
o
 
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a
n
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s
.
 
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R
N
4
6
5
8
 
i
n
c
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e
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s
e
s
 
o
u
t
e
r
 
t
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o
f
 
c
e
r
t
a
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A
Q
 
b
a
n
d
s
.
The 
following 
table 
details 
the 
new validation bands 
that 
will 
be applied 
for 
each 
of the AQ
 
Band:
 
H
o
w
 
d
o
 
r
e
a
d
s
 
a
f
f
e
c
t
 
A
Q
?
 
1
1
0
1
1
 
A
Q
G
o
-
1
l
i
v
e
 
A
Q
G
o
1
-
l
i
v
e
 
Latest 
closed out 
read will trigger 
the 
AQ
 
calculation
 
1
 
2
1
0
1
1
 
3
M
-
1
5
 
4
M
-
8
 
Any 
valid 
read received on or before 
10
th 
of the 
month 
will 
flag that the 
AQ 
calculation is
 
required
O
n
 
1
1
t
h
 
o
f
 
t
h
e
 
m
o
n
t
h
,
 
t
h
e
 
A
Q
 
c
a
l
c
u
l
a
t
i
o
n
 
e
x
e
c
u
t
e
s
.
 
T
h
e
 
c
a
l
c
u
l
a
t
i
o
n
 
c
o
n
s
i
d
e
r
s
 
i
n
i
t
i
a
l
 
r
e
a
d
s
 
f
o
r
 
e
i
t
h
e
r
;
365 
days 
(optimum period) but no older than 
backstop
 
date.
A 
minimum 
of 9 months is required 
in 
order to
 
calculate.
A
t
 
M
-
1
5
 
A
Q
 
C
o
r
r
e
c
t
i
o
n
 
C
l
o
s
e
o
u
t
 
w
i
n
d
o
w
.
 
A
Q
 
c
o
r
r
e
c
t
i
o
n
s
 
r
e
c
e
i
v
e
d
 
a
f
t
e
r
 
t
h
i
s
 
p
e
r
i
o
d
 
w
i
l
l
 
b
e
 
a
p
p
l
i
e
d
 
t
h
e
 
f
o
l
l
o
w
i
n
g
 
m
o
n
t
h
A
t
 
M
-
8
 
A
Q
 
C
o
r
r
e
c
t
i
o
n
 
C
a
n
c
e
l
l
a
t
i
o
n
 
C
l
o
s
e
o
u
t
.
 
A
Q
 
c
o
r
r
e
c
t
i
o
n
 
c
a
n
 
b
e
 
c
a
n
c
e
l
l
e
d
 
u
p
 
t
o
 
t
h
i
s
 
p
o
i
n
t
.
 
A
f
t
e
r
 
t
h
i
s
 
d
a
t
e
,
 
t
h
e
 
s
y
s
t
e
m
 
w
i
l
l
 
a
p
p
l
y
 
t
h
e
AQ
 correction.
A
t
 
M
-
5
 
N
o
t
i
f
i
c
a
t
i
o
n
 
(
N
R
L
)
 
s
e
n
t
 
t
o
 
s
h
i
p
p
e
r
s
 
o
f
 
A
Q
 
r
e
v
i
s
i
o
n
 
o
r
 
f
a
i
l
e
d
 
A
Q
 
r
e
v
i
s
i
o
n
 
(
e
.
g
.
 
i
n
s
u
f
f
i
c
i
e
n
t
 
d
a
t
a
)
R
e
v
i
s
e
d
 
A
Q
 
g
o
e
s
 
l
i
v
e
.
 
T
h
e
 
b
a
c
k
s
t
o
p
 
d
a
t
e
 
i
s
 
u
p
d
a
t
e
d
 
w
h
e
n
 
t
h
e
 
A
Q
 
i
s
 
c
o
r
r
e
c
t
e
d
.
 
T
h
e
r
e
f
o
r
e
 
A
Q
 
c
a
n
n
o
t
 
b
e
 
c
o
r
r
e
c
t
e
d
 
f
o
r
 
a
 
f
u
r
t
h
e
r
 
9
 
m
o
n
t
h
s
 
1
 
2
 
3
4
5
 
6
 
5
6
M
-
5
 
Firstly 
what is AQ? The 
Annual 
Quantity 
measured in 
kWh 
is the 
energy 
a 
site 
is 
expected 
to use in 1 year. 
AQ 
influences a
number of processes, but 
for 
the validation of meter readings, 
the 
AQ 
will 
determine 
which 
Lower and 
Upper 
AQ 
tolerance  band
a reading 
will 
be validated
 
against.
When a valid 
read 
is accepted, the 
AQ 
calculation is triggered 
(this may 
not result in a 
change in 
the AQ 
value). The timeline  
for
this 
process is detailed
 
below.
 
There is 
more information on 
AQ contained 
within 
the 
Xoserve Information 
Library
 
here
.
 
A
Q
 
C
o
r
r
e
c
t
i
o
n
 
p
r
o
c
e
s
s
 
As
 
mentioned
 
in
 
the
 
previous
 
slide
 
there
 
is
 
an
 
AQ
 
correction
 
process
 
which
 
is
 
outlined
 
below.
A
Q
 
c
o
r
r
e
c
t
i
o
n
 
u
s
i
n
g
 
t
h
e
 
A
Q
I
 
F
i
l
e
Registered
 
or
 
Proposing
 
Shipper
 
can
 
request
 
a
 
change
 
in
 
AQ
 via
 
the
 
AQ
 
Correction
 
Process.
Accepted AQ 
value will 
be changed 
with 
effect from the first of the month 
following 
the request
being  accepted. 
The User will 
be notified of the AQ change 
via 
the 
NRL File 
at
 
M-5.
A
Q
 
C
o
r
r
e
c
t
i
o
n
 
r
e
q
u
e
s
t
 
g
o
e
s
 
l
i
v
e
 
o
n
 
t
h
e
1
s
t
 
o
f
 
n
e
x
t
 
m
o
n
t
h
.
 
T
h
e
 
A
Q
 
C
o
r
r
e
c
t
i
o
n
 
C
l
o
s
e
o
u
t
 
w
i
n
d
o
w
 
w
i
l
l
 
b
e
M
-
1
5
 
o
f
 
t
h
e
 
c
u
r
r
e
n
t
 
m
o
n
t
h
.
 
A
Q
 
c
o
r
r
e
c
t
i
o
n
s
 
r
e
c
e
i
v
e
d
 
a
f
t
e
r
 
t
h
i
s
 
p
e
r
i
o
d
 
w
i
l
l
 
b
e
 
a
p
p
l
i
e
d
 
t
h
e
 
f
o
l
l
o
w
i
n
g
m
o
n
t
h
.
M
-
8
 
A
Q
 
C
o
r
r
e
c
t
i
o
n
 
C
a
n
c
e
l
l
a
t
i
o
n
 
C
l
o
s
e
o
u
t
.
 
A
Q
 
c
o
r
r
e
c
t
i
o
n
 
c
a
n
 
b
e
 
c
a
n
c
e
l
l
e
d
 
u
p
 
t
o
 
t
h
i
s
 
p
o
i
n
t
.
 
A
f
t
e
r
 
t
h
i
s
d
a
t
e
,
 
t
h
e
 
s
y
s
t
e
m
 
w
i
l
l
 
a
p
p
l
y
 
t
h
e
 
A
Q
 
c
o
r
r
e
c
t
i
o
n
.
 
I
f
 
t
h
e
 
A
Q
 
C
o
r
r
e
c
t
i
o
n
 
c
a
n
c
e
l
l
a
t
i
o
n
 
r
e
q
u
e
s
t
 
i
s
 
r
e
c
e
i
v
e
d
 
a
f
t
e
r
t
h
e
 
c
l
o
s
e
 
o
u
t
 
p
e
r
i
o
d
,
 
t
h
e
 
r
e
q
u
e
s
t
 
w
i
l
l
 
b
e
 
r
e
j
e
c
t
e
d
A
 
backstop
 
date
 
is 
applied
 
when 
the
 
AQ
 
is
 
corrected.
 
Therefore
 
AQ
 
cannot
 
be
 corrected
 
for
 
a
 
further
 
9
months.
T
h
e
 
i
n
d
u
s
t
r
y
 
r
e
q
u
i
r
e
s
 
m
e
t
e
r
 
r
e
a
d
s
 
t
h
a
t
 
a
c
c
o
m
p
a
n
y
 
t
h
e
 
A
Q
 
c
o
r
r
e
c
t
i
o
n
 
t
o
 
b
e
 
v
a
l
i
d
a
t
e
d
 
u
s
i
n
g
 
t
h
e
 
c
o
r
r
e
c
t
e
d
A
Q
,
 
 
a
n
d
 
w
h
e
r
e
 
s
u
c
c
e
s
s
f
u
l
,
 
l
o
a
d
e
d
 
a
n
d
 
u
s
e
d
 
i
n
 
t
h
e
 
d
o
w
n
s
t
r
e
a
m
 
p
r
o
c
e
s
s
e
s
,
 
t
h
e
r
e
f
o
r
e
 
X
R
N
4
4
3
1
A
c
c
e
p
t
a
n
c
e
 
o
f
 
 
r
e
a
d
s
 
f
a
i
l
i
n
g
 
M
a
r
k
e
t
 
B
r
e
a
k
e
r
 
T
o
l
e
r
a
n
c
e
 
f
o
l
l
o
w
i
n
g
 
A
Q
 
C
o
r
r
e
c
t
i
o
n
 
f
a
c
i
l
i
t
a
t
e
s
 
t
h
i
s
 
t
o
c
h
a
n
g
e
 
b
y
 
i
n
c
l
u
d
i
n
g
 
t
h
e
 
 
U
0
1
 
i
n
 
t
h
e
 
h
i
e
r
a
r
c
h
y
 
a
n
d
 
t
h
e
 
r
e
a
d
 
i
s
 
v
a
l
i
d
a
t
e
d
 
a
g
a
i
n
s
t
 
t
h
e
 
r
e
q
u
e
s
t
e
d
 
A
Q
.
 
H
o
w
 
d
o
 
r
e
a
d
s
 
a
f
f
e
c
t
 
r
e
c
o
n
c
i
l
i
a
t
i
o
n
?
For more information 
on 
the 
Amendments Invoice 
please refer to
https://www.xoserve.com/wp-content/uploads/AmendmentsInvoice.pdf
 
Reconciliation relies 
on 
actual meter reads 
being 
submitted; readings can
be received 
for 
a variety 
of 
reasons
 
including:
 
Class 1 
& 
2 
- 
actual 
read received 
following a 
period of
estimates. Where the estimated 
reads are 
outside close out
(D+5)
Class 3 batch 
of actual
 
reads
Class 4 
actual 
reads received dependent on read
 
frequency
RGMA
 
Activity
Annual check
 
reads
Class 3 
& 
4 
estimated shipper transfer & 
class change
 
readings
Reads that follow the 
above scenarios 
on 
each 
site 
will 
trigger reconciliation 
. At 
a high 
level 
UK Link looks 
at the 
current read
received and then back 
to 
the previous 
read. 
It 
then calculates any difference in 
energy 
between 
what was 
allocated 
and invoiced
via 
the 
commodity invoice 
and 
what has actually 
been 
used. 
This 
difference is charged 
on 
the 
Amendments invoice 
and can have
a positive or negative
 
value.
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This document outlines the upcoming Release 3 changes for the UK Link implementation scheduled for November 2018. It covers the purpose, impacts, and specific changes related to read submission, impacting Shippers and Daily Metered Service Providers. The document also details the list of all changes, read submission process overview, and file format process flow for Shipper/DMSP submissions. The session aims to provide a practical understanding of the changes and their implications on the industry processes.


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  1. UK Link Release 3 Session 1 1

  2. Introduction and Purpose of Document Subsequent to Nexus project and the UK Link implementation in 2017, additional requirements have been agreed with the industry are these organised into a development programme and are applied in scheduled releases. This document will provide you with the Release 3 changes which are due to go live in November 2018. This pack will provide an overview of the impacted process, alongside exploring the specific impacts and will highlight the changes in a practical manner. The changes for release 3 has been broken down into 4 parts (detailed on next slide). Session 1 will look at the changes surrounding read submission. The Primary impacts will be Shippers and Daily Metered Service Providers (DMSP), read submission has a downstream impact on process such as AQ Review and reconciliation. . More information can be found on Xoserve.com here. 2

  3. List of all Changes XRN3656 & 4658 Read Validation Tolerance XRN4495 Energy Tolerance Rejection Code XRN4431 Reads Failed Market Breaker Tolerance XRN4481 Resolution of Penny Mismatches XRN4458 Class 4 CSEPS Recon. Variance ID XRN4534 Amendment to RGMA Rules for MTR Install Date XRN4453 File Format Should have Changes XRN4443 File Format Changes Aug 16 Unique Sites (deferred items from CR252) XRN4539 New File Level Rejection XRN4273 Installed Status of Failed MOD614 XRN4337 To change the optionality of the Supply Point confirmation reference for the T51 file XRN4486 Meter Type O = Orifice to be an acceptable value in file formats and reports XRN4538 Insertion of Maximum Number of Occurrences in MID Changes covered in this pack Session 2 Education Pack 1 Education Pack 2

  4. Read Submission process High level overview which will be used through the pack. Reads submitted by Shipper or DMSP Read submission varies by class Read Submitted File format validated in numerous ways Read now validated based on energy history Read Validated Revised AQ process could be triggered based on provision of new read AQprocess triggered Reconciliation process could be triggered based on provision of new read Reconciliation triggered

  5. File Format Process Flow Shipper/DMSP Submits read Incoming reads submitted and are sent as CSV files via the IX. Files are validated against file formats templates. The data that passes the initial validation is uploaded to UK Link ready for further Meter Read validation which is grouped into three levels: Read Submission Validation Checks the validity in terms of the Shipper/DMSP who submit the reads & submission window. Asset Checks Validation Validates the current asset details held on UK Link against the data received in the read files Read Validation Validates the read received against the previous read and performs energy tolerance checks File Level Validation Accepted files are stored and held ready for further processing UK Link Trigger for Valid read submission trigger reconciliationand AQ review processes. Response Files Class 1 & 2: accepted/rejected and estimated Class 3 & 4: accepted/rejected FunctionalValidations: Read submission Asset checks Reads (energy)

  6. Read Submission Class 1 meter points: meter reads are provided by DMSP on a DLC file. Reads will normally be received daily on and for the relevant gas flow day (GFD) Class 2 meter points: meter reads are provided by Shipper in Unbundled Daily Read (UDR) files on a daily basis Reads are normally received daily although on GFD+1 Class 3 meter points: meter reads are provided by Shipper through Unbundled Batch Read (UBR) files these are Daily Reads but are sent in batches Class 4 meter points: The Shipper provides meter reads through Unbundled Meter Read (UMR) files. The UMR files are received daily although the read frequency for individual supply meter points can be monthly, half yearly or yearly. For all classes reads can also be obtained Via the RGMA process on the ONJOB and ONUPDfiles Through the site visit process (SFN file for class 3&4 and Portal for class 1&2) Though theAQ correction process XRN4431 (see slide 17 for more detail)

  7. File level Validation As the files are subject to file level validation. Any discrepancies in the file formats will result in a rejection. The originator will need to correct the error and resend the file. To help reduce the number of rejections File formats are available onXoserve.com Ensure all fields are completed using the key below. RECORD/FIEL D_NAME OPT DOM LNG DEC DESCRIPTION Domain (T -text All text fieldswill be enclosedin double quotes (""), N - Numeric, D - Date (YYYYMMDD), M -Timestamp) Optional/Ma ndatory (O - Optional, M - Mandatory) Number of decimal places Gives more information about thefield Name willonly occur once in file format Numberof characters

  8. Read Validation: Energy Tolerance check Once the Read Submission Validation and Asset Checkshave been successfully passed UK Link then performs energy tolerancechecks. Read The system calculates the energy and then checksthe energy against permitted tolerance for theAQ band. Where the energy falls below the inner tolerancelevel, the read is accepted. If the inner tolerance is exceeded but below the outer tolerance (market breaker), the Shipper can override the breach using the override flag and the read will be accepted. To prevent bulk override where the override Flag is set, but the energy has not breached the inner tolerance, then the read is rejected. If the outer tolerance is breached, then the read is always rejected. Energy (kWh) T olerance T olerance Outer Inner Below Inner Tolerance Read Accepted (Not if flagged) Inner Tolerance Breach ReadOnly Acceptedwith OverrideFlag* Outer Tolerance Breach Read Rejected *Where do Iinput override Flag ? See next slide

  9. Inputting Tolerance Flag on Read File formats File formats can be found on Xoserve.com on the linkattached. The field relating to the tolerance flag is shown on the various read file formatsas - Key The description states tolerance override flag currently has two allowable values only: Blank and Y. Yis confirming that that the read is higher than the lower tolerance but is correct. XRN4495 - Energy Tolerance Rejection Code This change does not change the way the flag is added, only that it was identified that there were instances where the value of N has been provided in this field and this had been accepted and issued in the transfer read notificationfiles. This change will ensure that any incoming read requests received (from Shippers and DMSPs) with a Tolerance Override Flag value other than Y or blank will be rejected with new rejectioncodes. MRE01038 Non allowable value in Tolerance Override Flag will be used for Shippers. TOL00009- Non allowable value in Tolerance Override Flag will be used for DMSPs.

  10. Current Tolerances for Class 3&4 Meter Points The following table details the validation bands that will be applied for each of the AQ Bands for Class 3 &4sites. UpperAQ Band Read Accepted without Tolerance flag Lower AQ Band Read Accepted with Toleranceflag Read Rejected 0 2 1 0% - 2000000% ofAQ 0% - 10000% ofAQ 0% - 4000% ofAQ 0% - 2000% ofAQ 0% - 400% ofAQ 0% - 200% ofAQ 0% - 150% ofAQ 0% - 300% ofAQ 0% - 250% ofAQ 0% - 200% ofAQ 0% - 150% ofAQ 0% - 100% ofAQ 0% - 100% ofAQ > 2000000% - 7000000% ofAQ > 10000% - 25000% ofAQ > 4000% - 10000% ofAQ > 2000% - 5000% ofAQ > 400% - 2000% ofAQ > 200% - 500% ofAQ > 150% - 400% ofAQ > 300% - 600% ofAQ > 250% - 550% ofAQ > 200% - 500% ofAQ > 150% - 450% ofAQ > 100% - 400% ofAQ > 100% - 350% ofAQ > 7000000% ofAQ > 25000% ofAQ > 10000% ofAQ > 5000% ofAQ > 2000% ofAQ > 500% ofAQ > 400% ofAQ > 600% ofAQ > 550% ofAQ > 500% ofAQ > 450% ofAQ > 400% ofAQ > 350% ofAQ 200 500 1000 5000 10000 20000 73200 732000 2196000 29300000 58600000 201 501 1001 5001 10001 20001 73201 732001 2196001 29300001 58600001 999999999999999

  11. Current Tolerances for Class 1 & 2 Meter Points The following table details the validation bands that will be applied for each of the SOQ Bands for Class 1 & 2 sites. UpperSOQ Band Read Accepted without Tolerance flag Lower SOQBand Read Accepted with Toleranceflag Read Rejected 0 2 1 0% - 2000000% ofSOQ 0% - 10000% ofSOQ 0% - 4000% ofSOQ 0% - 2000% ofSOQ 0% - 400% ofSOQ 0% - 200% ofSOQ 0% - 150% ofSOQ 0% - 300% ofSOQ 0% - 250% ofSOQ 0% - 200% ofSOQ 0% - 150% ofSOQ 0% - 100% ofSOQ 0% - 100% ofSOQ > 2000000% - 7000000% ofSOQ > 10000% - 25000% ofSOQ > 4000% - 10000% ofSOQ > 2000% - 5000% ofSOQ > 400% - 2000% ofSOQ > 200% - 500% ofSOQ > 150% - 400% ofSOQ > 300% - 600% ofSOQ > 250% - 550% ofSOQ > 200% - 500% ofSOQ > 150% - 450% ofSOQ > 100% - 400% ofSOQ > 100% - 350% ofSOQ > 7000000% ofSOQ > 25000% ofSOQ > 10000% ofSOQ > 5000% ofSOQ > 2000% ofSOQ > 500% ofSOQ > 400% ofSOQ > 600% ofSOQ > 550% ofSOQ > 500% ofSOQ > 450% ofSOQ > 400% ofSOQ > 350% ofSOQ 200 500 1000 5000 10000 20000 73200 732000 2196000 29300000 58600000 201 501 1001 5001 10001 20001 73201 732001 2196001 29300001 58600001 999999999999999

  12. New Tolerances for Class 3 & 4 Meter Points only XRN3656 & XRN4658 Read Validation Tolerance changes will introduce an amendment to the current meter read tolerance bands that are used to validate incoming readings. XRN3656 The current validation band of 2kWh-200kWh will be split into two new bands of 2kWh-100kWh and 101kWh-200kWh with new tolerance values associated to them with a wider tolerance on the lower level of the two bands. XRN4658 increases outer tolerance of certainAQ bands. The following table details the new validation bands that will be applied for each of the AQBand: UpperAQ Band Read Accepted without Tolerance flag Lower AQ Band Read Accepted with Toleranceflag Read Rejected 0 2 1 0% - 2000000% ofAQ 0% - 20000% ofAQ 0% - 10000% ofAQ 0% - 4000% ofAQ 0% - 2000% ofAQ 0% - 400% ofAQ 0% - 200% ofAQ 0% - 150% ofAQ 0% - 300% ofAQ 0% - 250% ofAQ 0% - 200% ofAQ 0% - 150% ofAQ 0% - 100% ofAQ 0% - 100% ofAQ > 2000000% - 7000000% ofAQ > 20000% - 45000% of AQ > 10000% - 25000% of AQ > 4000% - 55000% ofAQ > 2000% - 25000% ofAQ > 400% - 7000% of AQ > 200% - 2000% of AQ > 150% -1100% of AQ > 300% - 1100% of AQ > 250% - 1000% of AQ > 200% - 1000% of AQ > 150% - 700% of AQ > 100% - 400% ofAQ > 100% - 350% ofAQ > 7000000% ofAQ > 45000% ofAQ > 25000% ofAQ > 55000% ofAQ > 25000% ofAQ > 7000% ofAQ > 2000% ofAQ > 1100% ofAQ > 1100% ofAQ > 1000% ofAQ > 1000% ofAQ > 700% ofAQ > 400% ofAQ > 350% ofAQ 100 201 500 1000 5000 10000 20000 73200 732000 2196000 29300000 58600000 101 201 501 1001 5001 10001 20001 73201 732001 2196001 29300001 58600001 999999999999999

  13. How do reads affect AQ? Firstly what is AQ? The Annual Quantity measured in kWh is the energy a site is expected to use in 1 year. AQ influences a number of processes, but for the validation of meter readings, the AQ will determine which Lower and Upper AQ tolerance band a reading will be validated against. When a valid read is accepted, the AQ calculation is triggered (this may not result in a change in the AQ value). The timeline for this process is detailedbelow. AQ AQ 4 2 11 3 5 M-5 6 1 Go1-live Go-1live 1 10 11 M-8 10 M-15 Latest closed out read will trigger the AQ calculation Any valid read received on or before 10th of the month will flag that the AQ calculation isrequired 1 On 11th of the month, the AQ calculation executes. The calculation considers initial reads for either; 365 days (optimum period) but no older than backstopdate. A minimum of 9 months is required in order to calculate. 2 3 At M-15 AQ Correction Closeout window. AQ corrections received after this period will be applied the following month At M-8 AQ Correction Cancellation Closeout. AQ correction can be cancelled up to this point. After this date, the system will apply the AQ correction. 4 5 At M-5 Notification (NRL) sent to shippers of AQ revision or failed AQ revision (e.g. insufficient data) 6 Revised AQ goes live. The backstop date is updated when the AQ is corrected. Therefore AQ cannot be corrected for a further 9 months There is more information on AQ contained within the Xoserve Information Libraryhere.

  14. AQ Correction process As mentioned in the previous slide there is anAQ correction process which is outlined below. AQ correction using the AQI File Registered or Proposing Shipper can request a change in AQ via theAQ Correction Process. Accepted AQ value will be changed with effect from the first of the month following the request being accepted. The User will be notified of the AQ change via the NRL File atM-5. AQ Correction request goes live on the1st of next month. The AQ Correction Closeout window willbe M-15 of the current month.AQ corrections received after this period will be applied the following month. M-8 AQ Correction Cancellation Closeout. AQ correction can be cancelled up to this point. After this date, the system will apply theAQ correction. If theAQ Correction cancellation request is received after the close out period, the request will berejected A backstop date is applied when the AQ is corrected.ThereforeAQ cannot be corrected for a further 9 months. The industry requires meter reads that accompany the AQ correction to be validated using the corrected AQ, and where successful, loaded and used in the downstream processes, therefore XRN4431 Acceptance of reads failing Market Breaker Tolerance following AQ Correction facilitates this to change by includingthe U01 in the hierarchy and the read is validated against the requestedAQ.

  15. How do reads affect reconciliation? Reconciliation relies on actual meter reads being submitted; readings can be received for a variety of reasons including: Class 1 & 2 - actual read received following a period of estimates. Where the estimated reads are outside close out (D+5) Class 3 batch of actual reads Class 4 actual reads received dependent on readfrequency RGMAActivity Annual check reads Class 3 & 4 estimated shipper transfer & class changereadings Reads that follow the above scenarios on each site will trigger reconciliation . At a high level UK Link looks at the current read received and then back to the previous read. It then calculates any difference in energy between what was allocated and invoiced via the commodity invoice and what has actually been used. This difference is charged on the Amendments invoice and can have a positive or negative value. For more information on the Amendments Invoice please refer to https://www.xoserve.com/wp-content/uploads/AmendmentsInvoice.pdf

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