Elexon explains the Non Half Hourly Data Aggregation (NHHDA) Check Data Collection Data (CDCD) function and guidance on managing and resolving exceptions.

<div data-id="1-1.1" style="text-align:left">1.1 Purpose</div>

<div data-id="1-1.2" style="text-align:left">1.2 Scope</div>

<div data-id="1-1.3" style="text-align:left">1.3 Summary</div>

<div data-id="1" style="text-align:left">1. Introduction</div>

<div data-id="2-2.1" style="text-align:left">2.1 Exception Types</div>

<div data-id="2-2.2" style="text-align:left">2.2 Use of this Guide</div>

<div data-id="2" style="text-align:left">2. D0095 Summary</div>

<div data-id="3-3.1" style="text-align:left">3.1 E01 – No AA or EAC for appointed NHHDA</div>

<div data-id="3-3.2" style="text-align:left">3.2 E02 – missing subsequent consumption data</div>

<div data-id="3-3.3" style="text-align:left">3.3 E03 – AA with no NHHDA Appointment</div>

<div data-id="3-3.4" style="text-align:left">3.4 E04 – EAC with no NHHDA Appointment</div>

<div data-id="3-3.5" style="text-align:left">3.5 E05 – Non Zero AA for De-energised <u class='defined-term'>Metering System</u></div>

<div data-id="3-3.6" style="text-align:left">3.6 E06 – missing preceding consumption data</div>

<div data-id="3-3.7" style="text-align:left">3.7 E07 – Overlapping AA s</div>

<div data-id="3-3.8" style="text-align:left">3.8 E08 – <u class='defined-term'>Supplier</u> Incorrect</div>

<div data-id="3-3.9" style="text-align:left">3.9 E09 – Inconsistent <u class='defined-term'>Measurement Class</u></div>

<div data-id="3-3.10" style="text-align:left">3.10 E10 – Inconsistent <u class='defined-term'>GSP Group</u></div>

<div data-id="3-3.11" style="text-align:left">3.11 E11 – Inconsistent <u class='defined-term'>Profile Class</u></div>

<div data-id="3-3.12" style="text-align:left">3.12 E12 – Inconsistent Energisation Status</div>

<div data-id="3-3.13" style="text-align:left">3.13 E13 – Inconsistent <u class='defined-term'>Standard Settlement Configuration</u></div>

<div data-id="3" style="text-align:left">3. EXCEPTIONS</div>

<div data-id="appendix-a--index-of-dtc-flows-referenced-by-volume-2-of-the-user-guide" style="text-align:left">APPENDIX A – Index of DTC flows referenced by Volume 2 of the User Guide</div>

<div data-id="further-information" style="text-align:left">Further Information</div>

CONTENTS

D0095 User Guide Volume 2 - Technical Guide V6.0

Defined Terms

Cross-references