This Guidance Note describes the checks the Technical Assurance Agent (TAA) caries out on a Metering System as part of a Desktop Audit

<div data-id="what-this-document-covers" style="text-align:left">What this document covers</div>

<div data-id="what-this-document-does-not-cover" style="text-align:left">What this document does not cover</div>

<div data-id="who-should-use-this-guidance-note" style="text-align:left">Who should use this Guidance Note?</div>

<html><head></head><body><div data-id="market-wide-half-hourly-settlement-mhhs" style="text-align:left">Market Wide Half Hourly <u class="defined-term">Settlement</u> (MHHS)</div></body></html>

<div data-id="what-is-a-taa-desktop-audit" style="text-align:left">What is a TAA <u class='defined-term'>Desktop Audit</u>?</div>

<html><head></head><body><div data-id="supplier-or-registrant-confirmation-of-a-taa-desktop-audit" style="text-align:left"><u class="defined-term">Supplier</u> or Registrant Confirmation of a TAA <u class="defined-term">Desktop Audit</u></div></body></html>

<div data-id="single-line-diagram" style="text-align:left">Single Line Diagram</div>

<div data-id="hh-consumption-data" style="text-align:left">HH <u class='defined-term'>Consumption Data</u></div>

<div data-id="commissioning-certificates" style="text-align:left">Commissioning Certificates</div>

<div data-id="overall-accuracy" style="text-align:left">Overall Accuracy</div>

<div data-id="aggregation-rule-cva-only" style="text-align:left">Aggregation Rule (CVA only)</div>

<div data-id="information-required-from-audit-participants-before-a-taa-desktop-audit" style="text-align:left">Information required from audit participants before a TAA <u class='defined-term'>Desktop Audit</u></div>

<div data-id="taa-inspection-visits-following-a-desktop-audit" style="text-align:left">TAA Inspection Visits following a <u class='defined-term'>Desktop Audit</u></div>

<div data-id="what-must-i-do-once-the-taa-have-completed-a-desktop-audit" style="text-align:left">What must I do once the TAA have completed a <u class='defined-term'>Desktop Audit</u>?</div>

<div data-id="do-you-need-more-information" style="text-align:left">Do you need more information?</div>

<div data-id="appendix-1" style="text-align:left">Appendix 1: Category A non-Compliances</div>

<div data-id="appendix-2" style="text-align:left">Appendix 2: Category B non-Compliances</div>

<div data-id="appendix-3" style="text-align:left">Appendix 3: Using the National Measurement Transformer Error Statement (NMTES)</div>

CONTENTS

Performance Assurance: TAA Desktop Audit Local Working Instruction V3.0

Defined Terms

Cross-references