This document is Part 1 of the Interface Definition and Design. The scope of the document is, for each BSC Service System provided, the definition and design of all interfaces between the BSC Service System and other Systems. The scope of Part 1 is limited to the definition and design of interfaces between the BSC Service System and the BSC Parties and their Agents.

63.0

<div data-id="1-1.1-1.1.1" style="margin-left: 3em">1.1.1 Summary</div>

<div data-id="1-1.1" style="margin-left: 2em">1.1 Purpose</div>

<div data-id="1-1.2-1.2.1" style="margin-left: 3em">1.2.1 The Scope of this Document</div>

<div data-id="1-1.2-1.2.2" style="margin-left: 3em">1.2.2 Types of Interface</div>

<div data-id="1-1.2" style="margin-left: 2em">1.2 Scope</div>

<div data-id="1-1.3-1.3.1" style="margin-left: 3em">1.3.1 Introduction</div>

<div data-id="1-1.3-1.3.2" style="margin-left: 3em">1.3.2 The Business Process Level</div>

<div data-id="1-1.3-1.3.3" style="margin-left: 3em">1.3.3 Logical Message Definition</div>

<div data-id="1-1.3-1.3.4" style="margin-left: 3em">1.3.4 Physical Message Definition</div>

<div data-id="1-1.3-1.3.5" style="margin-left: 3em">1.3.5 Data Transfer Protocols</div>

<div data-id="1-1.3" style="margin-left: 2em">1.3 NETA Interface Overview</div>

<div data-id="1-1.4" style="margin-left: 2em">1.4 Summary</div>

<div data-id="1-1.5-1.5.1" style="margin-left: 3em">1.5.1 BSC Documents</div>

<div data-id="1-1.5" style="margin-left: 2em">1.5 References</div>

<div data-id="1-1.6" style="margin-left: 2em">1.6 Abbreviations</div>

<div data-id="1" style="margin-left: 1em">1 Introduction</div>

<div data-id="2-2.1-2.1.1" style="margin-left: 3em">2.1.1 Manual</div>

<div data-id="2-2.1-2.1.2" style="margin-left: 3em">2.1.2 Electronic Data File Transfer</div>

<div data-id="2-2.1-2.1.3" style="margin-left: 3em">2.1.3 <u class='defined-term'>Meter</u> <u class='defined-term'>System</u> Interface</div>

<div data-id="2-2.1-2.1.4" style="margin-left: 3em">2.1.4 <u class='defined-term'>BMRA</u> Publishing Interface</div>

<div data-id="2-2.1" style="margin-left: 2em">2.1 Interface Mechanisms</div>

<div data-id="2-2.2-2.2.1" style="margin-left: 3em">2.2.1 File Header</div>

<div data-id="2-2.2-2.2.2" style="margin-left: 3em">2.2.2 File Footer</div>

<div data-id="2-2.2-2.2.3" style="margin-left: 3em">2.2.3 Record Formats</div>

<div data-id="2-2.2-2.2.4" style="margin-left: 3em">2.2.4 File Types, Record Types and Repeating Structure</div>

<div data-id="2-2.2-2.2.5" style="margin-left: 3em">2.2.5 File names</div>

<div data-id="2-2.2-2.2.6" style="margin-left: 3em">2.2.6 Unstructured File Format</div>

<div data-id="2-2.2-2.2.7" style="margin-left: 3em">2.2.7 Response Messages</div>

<div data-id="2-2.2-2.2.8" style="margin-left: 3em">2.2.8 Use of Sequence Numbers</div>

<div data-id="2-2.2-2.2.10" style="margin-left: 3em">2.2.10 The CRA Encryption Key</div>

<div data-id="2-2.2-2.2.11" style="margin-left: 3em">2.2.11 Valid Sets</div>

<div data-id="2-2.2-2.2.12" style="margin-left: 3em">2.2.12 Example File Formats</div>

<div data-id="2-2.2" style="margin-left: 2em">2.2 Data File Format</div>

<div data-id="2" style="margin-left: 1em">2 Common Interface Conventions</div>

<div data-id="3-3.1-3.1.1" style="margin-left: 3em">3.1.1 <u class='defined-term'>BMRA</u> Interfaces</div>

<div data-id="3-3.1-3.1.2" style="margin-left: 3em">3.1.2 <u class='defined-term'>CDCA</u> Interfaces</div>

<div data-id="3-3.1-3.1.3" style="margin-left: 3em">3.1.3 CRA Interfaces</div>

<div data-id="3-3.1-3.1.4" style="margin-left: 3em">3.1.4 <u class='defined-term'>ECVAA</u> Interfaces</div>

<div data-id="3-3.1-3.1.5" style="margin-left: 3em">3.1.5 SAA Interfaces</div>

<div data-id="3-3.1-3.1.6" style="margin-left: 3em">3.1.6 <u class='defined-term'>SVAA</u> Interfaces</div>

<div data-id="3-3.1" style="margin-left: 2em">3.1 Interfaces by <u class='defined-term'>BSC Agent</u></div>

<div data-id="3-3.2-3.2.1" style="margin-left: 3em">3.2.1 BSC <u class='defined-term'>Party</u> Interfaces</div>

<div data-id="3-3.2-3.2.2" style="margin-left: 3em">3.2.2 BSC <u class='defined-term'>Party Agent</u> Interfaces</div>

<div data-id="3-3.2-3.2.3" style="margin-left: 3em">3.2.3 <u class='defined-term'>Market Index Data Provider</u> Interfaces</div>

<div data-id="3-3.2" style="margin-left: 2em">3.2 Interfaces by Corresponding <u class='defined-term'>Party</u></div>

<div data-id="3" style="margin-left: 1em">3 External Interface Summary</div>

<div data-id="4-4.1-4.1.1" style="margin-left: 3em">4.1.1 <u class='defined-term'>Gate Closure</u> Data</div>

<div data-id="4-4.1-4.1.2" style="margin-left: 3em">4.1.2 <u class='defined-term'>Acceptance</u> and <u class='defined-term'>Balancing Services</u> Data</div>

<div data-id="4-4.1-4.1.3" style="margin-left: 3em">4.1.3 Declaration Data</div>

<div data-id="4-4.1" style="margin-left: 2em">4.1 <u class='defined-term'>BMRA</u>-I004: (output) Publish Balancing Mechanism Data</div>

<div data-id="4-4.2" style="margin-left: 2em">4.2 <u class='defined-term'>BMRA</u>-I005: (output) Publish <u class='defined-term'>System</u> Related Data</div>

<div data-id="4-4.3-4.3.1" style="margin-left: 3em">4.3.1 Indicative <u class='defined-term'>System</u> Price Stack Data</div>

<div data-id="4-4.3" style="margin-left: 2em">4.3 <u class='defined-term'>BMRA</u>-I006: (output) Publish Derived Data</div>

<div data-id="4-4.4" style="margin-left: 2em">4.4 <u class='defined-term'>BMRA</u>-I019: (output) Publish <u class='defined-term'>Credit Default</u> Notices</div>

<div data-id="4-4.5" style="margin-left: 2em">4.5 <u class='defined-term'>BMRA</u>-I010: (output) <u class='defined-term'>BMRA</u> Data Exception Reports</div>

<div data-id="4-4.6" style="margin-left: 2em">4.6 <u class='defined-term'>BMRA</u>-I015: (input) Receive <u class='defined-term'>Market Index Data</u></div>

<div data-id="4-4.7" style="margin-left: 2em">4.7 <u class='defined-term'>BMRA</u>-I028: (input) Receive <u class='defined-term'>REMIT</u> Data</div>

<div data-id="4-4.8" style="margin-left: 2em">4.8 <u class='defined-term'>BMRA</u>-I030: (output) Publish <u class='defined-term'>REMIT</u> Data</div>

<div data-id="4-4.9" style="margin-left: 2em">4.9 <u class='defined-term'>BMRA</u>-I031: (output) Publish <u class='defined-term'>Transparency Regulation Data</u></div>

<div data-id="4-4.10" style="margin-left: 2em">4.10 <u class='defined-term'>BMRA</u>-I035: (output) Publish <u class='defined-term'>Trading Unit</u> Data</div>

<div data-id="4-4.11" style="margin-left: 2em">4.11 <u class='defined-term'>BMRA</u>-I037: (output) Publish <u class='defined-term'>Replacement Reserve</u> Data</div>

<div data-id="4-4.12" style="margin-left: 2em">4.12 <u class='defined-term'>BMRA</u>-I038: (input) Receive Regional Demand Forecast and Restoration Data</div>

<div data-id="4-4.13" style="margin-left: 2em">4.13 <u class='defined-term'>BMRA</u>-I039: (output) Publish Regional Demand Forecast and Restoration Data</div>

<div data-id="4-4.14" style="margin-left: 2em">4.14 <u class='defined-term'>BMRA</u>-I039: (output) Publish Exempt Supply Volume Data</div>

<div data-id="4-4.15-4.15.1" style="margin-left: 3em">4.15.1 Message Types</div>

<div data-id="4-4.15-4.15.2" style="margin-left: 3em">4.15.2 Message Subject Naming</div>

<div data-id="4-4.15-4.15.3" style="margin-left: 3em">4.15.3 Message Formats</div>

<div data-id="4-4.15-4.15.4" style="margin-left: 3em">4.15.4 Field Type Definitions</div>

<div data-id="4-4.15-4.15.5" style="margin-left: 3em">4.15.5 Message Definitions</div>

<div data-id="4-4.15-4.15.6" style="margin-left: 3em">4.15.6 Format of Data within TIB Messages</div>

<div data-id="4-4.15-4.15.7" style="margin-left: 3em">4.15.7 Writing an Application that Subscribes to TIB Messages</div>

<div data-id="4-4.15" style="margin-left: 2em">4.15 <u class='defined-term'>BMRA</u> TIBCO Message Publishing - Data Formats</div>

<div data-id="4" style="margin-left: 1em">4 <u class='defined-term'>BMRA</u> External Inputs and Outputs</div>

<div data-id="5-5.1" style="margin-left: 2em">5.1 <u class='defined-term'>CDCA</u> Flow Overview</div>

<div data-id="5-5.2" style="margin-left: 2em">5.2 <u class='defined-term'>CDCA</u>-I001: (input) Aggregation rules</div>

<div data-id="5-5.3" style="margin-left: 2em">5.3 <u class='defined-term'>CDCA</u>-I003: (input) <u class='defined-term'>Meter</u> technical data</div>

<div data-id="5-5.4" style="margin-left: 2em">5.4 <u class='defined-term'>CDCA</u>-I004: (output) Notify New <u class='defined-term'>Meter</u> Protocol</div>

<div data-id="5-5.5" style="margin-left: 2em">5.5 <u class='defined-term'>CDCA</u>-I005: (input) Load New <u class='defined-term'>Meter</u> Protocol</div>

<div data-id="5-5.6" style="margin-left: 2em">5.6 <u class='defined-term'>CDCA</u>-I006: (output) <u class='defined-term'>Meter</u> Data for Proving Test</div>

<div data-id="5-5.7" style="margin-left: 2em">5.7 <u class='defined-term'>CDCA</u>-I007: (output) Proving Test Report/Exceptions</div>

<div data-id="5-5.8" style="margin-left: 2em">5.8 <u class='defined-term'>CDCA</u>-I008: (input) Obtain metered data from metering systems</div>

<div data-id="5-5.9" style="margin-left: 2em">5.9 <u class='defined-term'>CDCA</u>-I009: (input) <u class='defined-term'>Meter</u> Period Data Collected via Site Visit</div>

<div data-id="5-5.10" style="margin-left: 2em">5.10 <u class='defined-term'>CDCA</u>-I010: (output) Exception report for missing and invalid meter period data</div>

<div data-id="5-5.11" style="margin-left: 2em">5.11 <u class='defined-term'>CDCA</u>-I011: (input) Dial Readings from meter, for MAR</div>

<div data-id="5-5.12" style="margin-left: 2em">5.12 <u class='defined-term'>CDCA</u>-I012: (output) Report Raw meter Data</div>

<div data-id="5-5.13" style="margin-left: 2em">5.13 <u class='defined-term'>CDCA</u>-I013: (input) Response to Estimated data</div>

<div data-id="5-5.14" style="margin-left: 2em">5.14 <u class='defined-term'>CDCA</u>-I014: (output) Estimated Data Report</div>

<div data-id="5-5.15" style="margin-left: 2em">5.15 <u class='defined-term'>CDCA</u>-I015: (input) Reporting metering system faults</div>

<div data-id="5-5.16" style="margin-left: 2em">5.16 <u class='defined-term'>CDCA</u>-I017: (output) <u class='defined-term'>Meter</u> Reading Schedule for MAR</div>

<div data-id="5-5.17" style="margin-left: 2em">5.17 <u class='defined-term'>CDCA</u>-I018: (output) MAR Reconciliation Report</div>

<div data-id="5-5.18" style="margin-left: 2em">5.18 <u class='defined-term'>CDCA</u>-I019: (output) MAR Remedial Action Report</div>

<div data-id="5-5.19" style="margin-left: 2em">5.19 <u class='defined-term'>CDCA</u>-I021: (input) Notification of <u class='defined-term'>Metering Equipment</u> Work</div>

<div data-id="5-5.20" style="margin-left: 2em">5.20 <u class='defined-term'>CDCA</u>-I022: (input) Distribution <u class='defined-term'>Line Loss Factor</u>s</div>

<div data-id="5-5.21" style="margin-left: 2em">5.21 <u class='defined-term'>CDCA</u>-I023: (output) Missing <u class='defined-term'>Line Loss Factor</u>s</div>

<div data-id="5-5.22" style="margin-left: 2em">5.22 <u class='defined-term'>CDCA</u>-I025: (output) <u class='defined-term'>Aggregation Rules</u> Exceptions</div>

<div data-id="5-5.23" style="margin-left: 2em">5.23 <u class='defined-term'>CDCA</u>-I026: (output) Aggregated <u class='defined-term'>Meter</u> Volume Exceptions</div>

<div data-id="5-5.24" style="margin-left: 2em">5.24 <u class='defined-term'>CDCA</u>-I029: (output) Aggregated <u class='defined-term'>GSP Group Take</u> Volumes</div>

<div data-id="5-5.25" style="margin-left: 2em">5.25 <u class='defined-term'>CDCA</u>-I030: (output) <u class='defined-term'>Meter</u> Period Data for Distribution Area</div>

<div data-id="5-5.26" style="margin-left: 2em">5.26 <u class='defined-term'>CDCA</u>-I033: File Receipt Acknowledgement</div>

<div data-id="5-5.27" style="margin-left: 2em">5.27 <u class='defined-term'>CDCA</u>-I037: (output) Estimated Data Notification</div>

<div data-id="5-5.28" style="margin-left: 2em">5.28 <u class='defined-term'>CDCA</u>-I038: (output) Reporting metering system faults</div>

<div data-id="5-5.29" style="margin-left: 2em">5.29 <u class='defined-term'>CDCA</u>-I041: (output) <u class='defined-term'>Interconnector</u> Aggregation Report</div>

<div data-id="5-5.30" style="margin-left: 2em">5.30 <u class='defined-term'>CDCA</u>-I042: (output) <u class='defined-term'>BM Unit</u> Aggregation Report</div>

<div data-id="5-5.31" style="margin-left: 2em">5.31 <u class='defined-term'>CDCA</u>-I044: (input) <u class='defined-term'>Meter</u> <u class='defined-term'>System</u> Proving Validation</div>

<div data-id="5-5.32" style="margin-left: 2em">5.32 <u class='defined-term'>CDCA</u>-I045: (input) <u class='defined-term'>Meter</u> Data from routine work and <u class='defined-term'>Meter</u>ing Faults</div>

<div data-id="5-5.33" style="margin-left: 2em">5.33 <u class='defined-term'>CDCA</u>-I046: (output) Site Visit Inspection Report</div>

<div data-id="5-5.34" style="margin-left: 2em">5.34 <u class='defined-term'>CDCA</u>-I047: (output) Correspondence Receipt Acknowledgement</div>

<div data-id="5-5.35" style="margin-left: 2em">5.35 <u class='defined-term'>CDCA</u>-I048: (output) Report of <u class='defined-term'>Aggregation Rules</u></div>

<div data-id="5-5.36" style="margin-left: 2em">5.36 <u class='defined-term'>CDCA</u>-I051: (output) Report <u class='defined-term'>Meter Technical Details</u></div>

<div data-id="5-5.37" style="margin-left: 2em">5.37 <u class='defined-term'>CDCA</u>-I054:(output) <u class='defined-term'>Meter</u> Status Report</div>

<div data-id="5-5.38" style="margin-left: 2em">5.38 <u class='defined-term'>CDCA</u>-I055: (input) Transfer from <u class='defined-term'>SMRS</u> information</div>

<div data-id="5-5.39" style="margin-left: 2em">5.39 <u class='defined-term'>CDCA</u>-I057: (input) Transfer to <u class='defined-term'>SMRS</u> information</div>

<div data-id="5-5.40" style="margin-left: 2em">5.40 <u class='defined-term'>CDCA</u>-I059: (output) Initial <u class='defined-term'>Meter</u> Reading Report</div>

<div data-id="5-5.41" style="margin-left: 2em">5.41 <u class='defined-term'>CDCA</u>-I060: (input) SVA <u class='defined-term'>Party Agent</u> Details</div>

<div data-id="5-5.42" style="margin-left: 2em">5.42 <u class='defined-term'>CDCA</u>-I067: (input) Disconnected <u class='defined-term'>BM Unit</u>s</div>

<div data-id="5" style="margin-left: 1em">5 <u class='defined-term'>CDCA</u> External Inputs and Outputs</div>

<div data-id="6-6.1" style="margin-left: 2em">6.1 CRA Flow Overview</div>

<div data-id="6-6.2" style="margin-left: 2em">6.2 CRA-I001: (input) BSC <u class='defined-term'>Party Registration Data</u></div>

<div data-id="6-6.3" style="margin-left: 2em">6.3 CRA-I002: (input) <u class='defined-term'>Interconnector Administrator</u> Registration Data</div>

<div data-id="6-6.4" style="margin-left: 2em">6.4 CRA-I003: (input) BSC <u class='defined-term'>Party Agent</u> Registration Data</div>

<div data-id="6-6.5" style="margin-left: 2em">6.5 CRA-I005: (input) <u class='defined-term'>BM Unit</u> Registration Data</div>

<div data-id="6-6.6" style="margin-left: 2em">6.6 CRA-I006: (input) <u class='defined-term'>Trading Unit</u> Registration</div>

<div data-id="6-6.7" style="margin-left: 2em">6.7 CRA-I007: (input/output) <u class='defined-term'>Boundary Point</u> and <u class='defined-term'>System</u> Connection Point Data</div>

<div data-id="6-6.8" style="margin-left: 2em">6.8 CRA-I008: (input) <u class='defined-term'>Interconnector</u> Registration Details</div>

<div data-id="6-6.9" style="margin-left: 2em">6.9 CRA-I012: (output) CRA Encryption Key</div>

<div data-id="6-6.10" style="margin-left: 2em">6.10 CRA-I014: (output) Registration Report</div>

<div data-id="6-6.11" style="margin-left: 2em">6.11 CRA-I021: (output) Registered Service List</div>

<div data-id="6-6.12" style="margin-left: 2em">6.12 CRA-I024: (output) Certification and Accreditation Status Report</div>

<div data-id="6-6.13" style="margin-left: 2em">6.13 CRA-I025: Receive Acknowledgement</div>

<div data-id="6-6.14" style="margin-left: 2em">6.14 CRA-I026: Issue Acknowledgement</div>

<div data-id="6-6.15" style="margin-left: 2em">6.15 CRA-I027: (input) <u class='defined-term'>GSP Group</u> and GSP Registration</div>

<div data-id="6-6.16" style="margin-left: 2em">6.16 CRA-I031: (input) <u class='defined-term'>Metering System</u> Data</div>

<div data-id="6-6.17" style="margin-left: 2em">6.17 CRA-I034: (input) Flexible Reporting Request</div>

<div data-id="6-6.18" style="margin-left: 2em">6.18 CRA-I038: Transfer from <u class='defined-term'>SMRS</u> information</div>

<div data-id="6-6.19" style="margin-left: 2em">6.19 CRA-I040: Transfer to <u class='defined-term'>SMRS</u> information</div>

<div data-id="6-6.20" style="margin-left: 2em">6.20 CRA-I048: GC or <u class='defined-term'>DC Breach Notification</u></div>

<div data-id="6-6.21" style="margin-left: 2em">6.21 CRA-I049: GC or DC Breach Estimation Challenge</div>

<div data-id="6-6.22" style="margin-left: 2em">6.22 CRA-I051: Notification of Breach Challenge Data</div>

<div data-id="6" style="margin-left: 1em">6 CRA External Inputs and Outputs</div>

<div data-id="7-7.1" style="margin-left: 2em">7.1 <u class='defined-term'>ECVAA</u> Flow Overview</div>

<div data-id="7-7.2" style="margin-left: 2em">7.2 <u class='defined-term'>ECVAA</u>-I002: (input) <u class='defined-term'>ECVNA</u>A Data</div>

<div data-id="7-7.3" style="margin-left: 2em">7.3 <u class='defined-term'>ECVAA</u>-I003: (input) <u class='defined-term'>MVRNA</u>A Data</div>

<div data-id="7-7.4" style="margin-left: 2em">7.4 <u class='defined-term'>ECVAA</u>-I004: (input) ECVN</div>

<div data-id="7-7.5" style="margin-left: 2em">7.5 <u class='defined-term'>ECVAA</u>-I005: (input) MVRN</div>

<div data-id="7-7.6" style="margin-left: 2em">7.6 <u class='defined-term'>ECVAA</u>-I007: (output) <u class='defined-term'>ECVNA</u>A Feedback</div>

<div data-id="7-7.7" style="margin-left: 2em">7.7 <u class='defined-term'>ECVAA</u>-I008: (output) <u class='defined-term'>MVRNA</u>A Feedback</div>

<div data-id="7-7.8" style="margin-left: 2em">7.8 <u class='defined-term'>ECVAA</u>-I009: (output) ECVN Feedback (Rejection)</div>

<div data-id="7-7.9" style="margin-left: 2em">7.9 <u class='defined-term'>ECVAA</u>-I010: (output) MVRN Feedback (Rejection)</div>

<div data-id="7-7.10" style="margin-left: 2em">7.10 <u class='defined-term'>ECVAA</u>-I013: (output) Authorisation Report</div>

<div data-id="7-7.11" style="margin-left: 2em">7.11 <u class='defined-term'>ECVAA</u>-I014: (output) Notification Report</div>

<div data-id="7-7.12" style="margin-left: 2em">7.12 <u class='defined-term'>ECVAA</u>-I018: Receive Acknowledgement</div>

<div data-id="7-7.13" style="margin-left: 2em">7.13 <u class='defined-term'>ECVAA</u>-I019: Issue Acknowledgement</div>

<div data-id="7-7.14" style="margin-left: 2em">7.14 <u class='defined-term'>ECVAA</u>-I022: (output) Forward Contract Report</div>

<div data-id="7-7.15" style="margin-left: 2em">7.15 <u class='defined-term'>ECVAA</u>-I024: (input) <u class='defined-term'>Credit Cover</u> Minimum Eligible Amount Request</div>

<div data-id="7-7.16" style="margin-left: 2em">7.16 <u class='defined-term'>ECVAA</u>-I025: (output) <u class='defined-term'>Credit Cover</u> Minimum Eligible Amount Report</div>

<div data-id="7-7.17" style="margin-left: 2em">7.17 <u class='defined-term'>ECVAA</u>-I028: (output) ECVN <u class='defined-term'>Acceptance</u> Feedback</div>

<div data-id="7-7.18" style="margin-left: 2em">7.18 <u class='defined-term'>ECVAA</u>-I029: (output) MVRN <u class='defined-term'>Acceptance</u> Feedback</div>

<div data-id="7-7.19" style="margin-left: 2em">7.19 Forward Contract Report Start Period Override</div>

<div data-id="7-7.20" style="margin-left: 2em">7.20 <u class='defined-term'>ECVAA</u>-I021: (output) Credit Limit Warning</div>

<div data-id="7-7.21" style="margin-left: 2em">7.21 <u class='defined-term'>ECVAA</u>-I037: (input) Receive <u class='defined-term'>Volume Notification Nullification Request</u></div>

<div data-id="7-7.22" style="margin-left: 2em">7.22 <u class='defined-term'>ECVAA</u>-I038: (output) Issue <u class='defined-term'>Volume Notification Nullification Confirmation Report</u></div>

<div data-id="7-7.23" style="margin-left: 2em">7.23 <u class='defined-term'>ECVAA</u>-I039: (output) Issue Nullification Completion Report</div>

<div data-id="7-7.24-7.24.1" style="margin-left: 3em">7.24.1 Sign Convention</div>

<div data-id="7-7.24-7.24.2" style="margin-left: 3em">7.24.2 Notes on functionality</div>

<div data-id="7-7.24-7.24.3" style="margin-left: 3em">7.24.3 Notes on Notification Processing and Reporting</div>

<div data-id="7-7.24" style="margin-left: 2em">7.24 Additional Clarification on <u class='defined-term'>ECVAA</u> Interfaces</div>

<div data-id="7-7.25" style="margin-left: 2em">7.25 <u class='defined-term'>ECVAA</u>-I042: Banning/Unbannimg Individual User Access to the <u class='defined-term'>ECVAA</u> Web Service</div>

<div data-id="7-7.26" style="margin-left: 2em">7.26 <u class='defined-term'>ECVAA</u>-I043: <u class='defined-term'>ECVAA</u> Web Service – BSC <u class='defined-term'>Party</u> View ECVNs</div>

<div data-id="7-7.27" style="margin-left: 2em">7.27 <u class='defined-term'>ECVAA</u>-I044: <u class='defined-term'>ECVAA</u> Web Service – BSC <u class='defined-term'>Party</u> View MVRNs</div>

<div data-id="7-7.28" style="margin-left: 2em">7.28 7<u class='defined-term'>ECVAA</u>-I045: <u class='defined-term'>ECVAA</u> Web Service – <u class='defined-term'>ECVNA</u> View ECVNs.</div>

<div data-id="7-7.29" style="margin-left: 2em">7.29 <u class='defined-term'>ECVAA</u>-I046: <u class='defined-term'>ECVAA</u> Web Service – <u class='defined-term'>MVRNA</u> View MVRNs.</div>

<div data-id="7-7.30" style="margin-left: 2em">7.30 <u class='defined-term'>ECVAA</u>-I051: <u class='defined-term'>Wholesale Market Activity Notification</u></div>

<div data-id="7-7.31" style="margin-left: 2em">7.31 <u class='defined-term'>ECVAA</u>-I052: <u class='defined-term'>Wholesale Market Activity Notification</u> Exception Report</div>

<div data-id="7" style="margin-left: 1em">7 <u class='defined-term'>ECVAA</u> External Inputs and Outputs</div>

<div data-id="8-8.1" style="margin-left: 2em">8.1 SAA Flow Overview</div>

<div data-id="8-8.2" style="margin-left: 2em">8.2 SAA-I006: (input) <u class='defined-term'>BM Unit Metered Volume</u>s for <u class='defined-term'>Interconnector User</u>s</div>

<div data-id="8-8.3" style="margin-left: 2em">8.3 SAA-I012: (input) Dispute Notification</div>

<div data-id="8-8.4-8.4.1" style="margin-left: 3em">8.4.1 Aggregate <u class='defined-term'>Party</u> Day Charges</div>

<div data-id="8-8.4-8.4.2" style="margin-left: 3em">8.4.2 Aggregate VLP Day Charges<a class="sdfootnoteanc" name="sdfootnote22anc" href="#sdfootnote22sym"><sup>22</sup></a></div>

<div data-id="8-8.4-8.4.3" style="margin-left: 3em">8.4.3 Aggregate <u class='defined-term'>Party</u> Period Charges</div>

<div data-id="8-8.4-8.4.4" style="margin-left: 3em">8.4.4 Aggregate VLP Period Charges<a class="sdfootnoteanc" name="sdfootnote23anc" href="#sdfootnote23sym"><sup>23</sup></a></div>

<div data-id="8-8.4-8.4.5" style="margin-left: 3em">8.4.5 <u class='defined-term'>System</u> Period Data</div>

<div data-id="8-8.4-8.4.6" style="margin-left: 3em">8.4.6 VLP<a class="sdfootnoteanc" name="sdfootnote24anc" href="#sdfootnote24sym"><sup>24</sup></a> <u class='defined-term'>System</u> Period Data</div>

<div data-id="8-8.4-8.4.7" style="margin-left: 3em">8.4.7 <u class='defined-term'>System</u> <u class='defined-term'>Quarter Hour</u> Data (following the TERRE P344 Final <u class='defined-term'>Implementation Date</u>)</div>

<div data-id="8-8.4-8.4.8" style="margin-left: 3em">8.4.8 Account Period Data</div>

<div data-id="8-8.4-8.4.9" style="margin-left: 3em">8.4.9 <u class='defined-term'>Virtual Balancing Account</u> Period Data</div>

<div data-id="8-8.4-8.4.10" style="margin-left: 3em">8.4.10 Account Period BMU Data</div>

<div data-id="8-8.4-8.4.11" style="margin-left: 3em">8.4.11 <u class='defined-term'>BM Unit</u> Period Data</div>

<div data-id="8-8.4-8.4.12" style="margin-left: 3em">8.4.12 <u class='defined-term'>Secondary BM Unit</u> Period Data</div>

<div data-id="8-8.4-8.4.13" style="margin-left: 3em">8.4.13 <u class='defined-term'>BM Unit</u> Period RR Data</div>

<div data-id="8-8.4-8.4.14" style="margin-left: 3em">8.4.14 <u class='defined-term'>BM Unit</u> <u class='defined-term'>Quarter Hour</u> RR Data</div>

<div data-id="8-8.4-8.4.15" style="margin-left: 3em">8.4.15 <u class='defined-term'>Replacement Reserve Bid</u></div>

<div data-id="8-8.4-8.4.16" style="margin-left: 3em">8.4.16 RR Auction Period</div>

<div data-id="8-8.4-8.4.17" style="margin-left: 3em">8.4.17 RR Auction Point</div>

<div data-id="8-8.4-8.4.18" style="margin-left: 3em">8.4.18 RR Activation</div>

<div data-id="8-8.4-8.4.19" style="margin-left: 3em">8.4.19 RR Activation Point</div>

<div data-id="8-8.4-8.4.20" style="margin-left: 3em">8.4.20 <u class='defined-term'>Bid-Offer Data</u></div>

<div data-id="8-8.4" style="margin-left: 2em">8.4 SAA-I014: (output) <u class='defined-term'>Settlement</u> Reports</div>

<div data-id="8" style="margin-left: 1em">8 SAA External Inputs and Outputs</div>

CONTENTS

NETA Interface Definition and Design Document Part 1 – Interfaces with BSC Parties and their Agents V63.0

Defined Terms

Cross-references