This specification provides a detailed explanation of NHH instruction processing. It is a technical document which is aimed at developers. It outlines certain critical validation that is directly relevant to instruction processing. It does not specify all required validation. This is contained in the NHHDA User Requirements Specification.

<div data-id="1" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">1 Introduction</div>

<div data-id="2" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">2 Key Premises</div>

<div data-id="3-3.1-3.1.1" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">3.1.1 Relevant Relationship</div>

<div data-id="3-3.1-3.1.2" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">3.1.2 Relevant Relationship Change</div>

<div data-id="3-3.1-3.1.3" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">3.1.3 Significant Date</div>

<div data-id="3-3.1" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">3.1 Relevant Relationship, Relevant Relationship Change and Significant Date</div>

<div data-id="3-3.2-3.2.1" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">3.2.1 “<u class='defined-term'>Data Aggregator</u> Appointment Details” Instruction Type</div>

<div data-id="3-3.2-3.2.2" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">3.2.2 “<u class='defined-term'>Data Collector</u> Appointment Details” Instruction Type</div>

<div data-id="3-3.2-3.2.3" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">3.2.3 “<u class='defined-term'>Profile Class</u>/SSC in Registration Details” Instruction Type</div>

<div data-id="3-3.2-3.2.4" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">3.2.4 “<u class='defined-term'>Measurement Class</u> in Registration Details” Instruction Type</div>

<div data-id="3-3.2-3.2.5" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">3.2.5 “Energisation Status in Registration Details” Instruction Type</div>

<div data-id="3-3.2-3.2.6" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">3.2.6 “<u class='defined-term'>GSP Group</u> Details” Instruction Type</div>

<div data-id="3-3.2-3.2.7" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">3.2.7 “<u class='defined-term'>Line Loss Factor Class</u> Details” Instruction Type</div>

<div data-id="3-3.2-3.2.8" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">3.2.8 PRS Refresh</div>

<div data-id="3-3.2" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">3.2 PRS Instructions</div>

<div data-id="3-3.3-3.3.1" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">3.3.1 “EAC/AA &amp; MS Details” Instruction Type</div>

<div data-id="3-3.3" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">3.3 NHH <u class='defined-term'>Data Collector</u> Instructions</div>

<div data-id="3-3.4-3.4.1" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">3.4.1 Instruction File Processing</div>

<div data-id="3-3.4-3.4.2" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">3.4.2 Instruction File Processing - Problem Resolution</div>

<div data-id="3-3.4-3.4.3" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">3.4.3 Instruction Processing</div>

<div data-id="3-3.4-3.4.4" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">3.4.4 Instruction Processing - Problem Resolution</div>

<div data-id="3-3.4" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">3.4 Instruction Life Cycle Processing</div>

<div data-id="3" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">3 Specification</div>

<div data-id="appendix-a---instruction-format" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">Appendix A - Instruction Format</div>

<div data-id="appendix-b---examples-1" style="margin-left:0.5in;text-align:left;text-indent:-0.5in"><span>1</span>. New <u class='defined-term'>Metering System</u></div>

<div data-id="appendix-b---examples-2" style="margin-left:0.5in;text-align:left;text-indent:-0.5in"><span>2</span>. Change of <u class='defined-term'>Standard Settlement Configuration</u></div>

<div data-id="appendix-b---examples-3" style="margin-left:0.5in;text-align:left;text-indent:-0.5in"><span>3</span>. Change of <u class='defined-term'>Supplier</u> and <u class='defined-term'>Data Aggregator</u></div>

<div data-id="appendix-b---examples-4" style="margin-left:0.5in;text-align:left;text-indent:-0.5in"><span>4</span>. Change of <u class='defined-term'>Supplier</u> with no change of <u class='defined-term'>Data Aggregator</u></div>

<div data-id="appendix-b---examples-5" style="margin-left:0.5in;text-align:left;text-indent:-0.5in"><span>5</span>. Change of <u class='defined-term'>Data Aggregator</u> with no Change of <u class='defined-term'>Supplier</u></div>

<div data-id="appendix-b---examples-6" style="margin-left:0.5in;text-align:left;text-indent:-0.5in"><span>6</span>. Correction to Relationship Start Date</div>

<div data-id="appendix-b---examples-7" style="margin-left:0.5in;text-align:left;text-indent:-0.5in"><span>7</span>. Registration Withdrawn</div>

<div data-id="appendix-b---examples-8" style="margin-left:0.5in;text-align:left;text-indent:-0.5in"><span>8</span>. Details sent to incorrect <u class='defined-term'>Data Aggregator</u></div>

<div data-id="appendix-b---examples-9" style="margin-left:0.5in;text-align:left;text-indent:-0.5in"><span>9</span>. Initial EAC created for a <u class='defined-term'>Metering System</u></div>

<div data-id="appendix-b---examples-10" style="margin-left:0.5in;text-align:left;text-indent:-0.5in"><span>10</span>. AAs Calculated for a <u class='defined-term'>Metering System</u></div>

<div data-id="appendix-b---examples-11" style="margin-left:0.5in;text-align:left;text-indent:-0.5in"><span>11</span>. AAs withdrawn for a <u class='defined-term'>Metering System</u></div>

<div data-id="appendix-b---examples" style="margin-left:0.5in;text-align:left;text-indent:-0.5in">Appendix B - Examples</div>

CONTENTS

NHH Instruction Processing Specification V7.0

Defined Terms

Cross-references