Section O contains the rules regarding communications between Parties, Party Agents, the Panel, BSCCo (Elexon), the National Electricity Transmission System Operator (NETSO) and BSC Agents under the BSC. It also sets out: the purpose of the SVA Data Catalogue and the Communication Requirements Document; the requirement for each Party to have a Party System in order to communicate with BSC Agents; and rules regarding planned BSC Agent downtime.

<div data-id="section-o-1-1.1" style="margin-left:0.69in;text-align:justify;text-indent:-0.69in">1.1 Introduction</div>

<div data-id="section-o-1-1.2" style="margin-left:0.69in;text-align:justify;text-indent:-0.69in">1.2 <u class='defined-term'>Communication</u>s</div>

<div data-id="section-o-1-1.3" style="margin-left:0.69in;text-align:justify;text-indent:-0.69in">1.3 <u class='defined-term'>Data Catalogue</u></div>

<div data-id="section-o-1-1.4" style="margin-left:0.69in;text-align:justify;text-indent:-0.69in">1.4 <u class='defined-term'>SVA Communication</u>s</div>

<div data-id="section-o-1" style="margin-left:0.69in;text-align:justify;text-indent:-0.69in">1. GENERAL</div>

<div data-id="section-o-2-2.1" style="margin-left:0.69in;text-align:justify;text-indent:-0.69in">2.1 Application of further provisions of this Section O</div>

<div data-id="section-o-2-2.2" style="margin-left:0.69in;text-align:justify;text-indent:-0.69in">2.2 Interpretation</div>

<div data-id="section-o-2-2.3" style="margin-left:0.69in;text-align:justify;text-indent:-0.69in">2.3 <u class='defined-term'>Communication Requirements Document</u></div>

<div data-id="section-o-2" style="margin-left:0.69in;text-align:justify;text-indent:-0.69in">2. SCOPE AND INTEPRETATION</div>

<div data-id="section-o-3-3.1" style="margin-left:0.69in;text-align:justify;text-indent:-0.69in">3.1 Requirement to have a <u class='defined-term'>Party System</u></div>

<div data-id="section-o-3-3.2" style="margin-left:0.69in;text-align:justify;text-indent:-0.69in">3.2 Testing</div>

<div data-id="section-o-3-3.3" style="margin-left:0.69in;text-align:justify;text-indent:-0.69in">3.3 Changes to <u class='defined-term'>Party System</u>s</div>

<div data-id="section-o-3-3.4" style="margin-left:0.69in;text-align:justify;text-indent:-0.69in">3.4 Security</div>

<div data-id="section-o-3" style="margin-left:0.69in;text-align:justify;text-indent:-0.69in">3 PARTIES' OBLIGATIONS</div>

<div data-id="section-o-4-4.1" style="margin-left:0.69in;text-align:justify;text-indent:-0.69in">4.1 Form and effect of <u class='defined-term'>Communication</u>s</div>

<div data-id="section-o-4-4.2" style="margin-left:0.69in;text-align:justify;text-indent:-0.69in">4.2 Effective receipt of <u class='defined-term'>Communication</u>s</div>

<div data-id="section-o-4-4.3" style="margin-left:0.69in;text-align:justify;text-indent:-0.69in">4.3 <u class='defined-term'>BSC Agent</u> Downtime</div>

<div data-id="section-o-4-4.4" style="margin-left:0.69in;text-align:justify;text-indent:-0.69in">4.4 Other obligations</div>

<div data-id="section-o-4" style="margin-left:0.69in;text-align:justify;text-indent:-0.69in">4 RULES AS TO COMMUNICATIONS</div>

<div data-id="amendment-record--section-o" style="margin-left:0.69in;text-indent:-0.69in;text-align: center">AMENDMENT RECORD – SECTION O</div>

<div data-id="section-o" style="text-align:center">SECTION O: COMMUNICATIONS UNDER THE CODE</div>

CONTENTS

BSC Section O: Communications Under the Code V5.0