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XRN 4803
Amend AQI validation/processing

Last Updated
14 Jan 2019
Release Type
Implementation Date
27 Jul 2019
Proposer Npower Impacted DSC service area

Service Area 6 (Previous Dec 18 – Mar 21)

Annual quantity, DM supply point capacity and offtake rate reviews

Customer Change Team Leader


The AQ Correction process enables the Registered User to challenge the Formula Year AQ/SOQ and Rolling AQ/SOQ where the existing recorded value is not reflective of the next 12 months annual quantity. There are 4 reasons for which the AQ can be corrected, one being correction reason code 4, allows for an AQ Correction following the rejection of a meter read due to failure of the outer tolerance validation.

Currently the validation checks that the AQ has been recalculated when assessing the AQ correction request however where a site was previously shipperless or unregistered where an AQ has not been re-calculated since Nexus go live. In this instance the AQ correction is rejected with rejection code AQI00004 – Recently calculated AQ is not available.

In this instance there is no further action that can be taken and future reads cannot be loaded as the prevailing AQ is understated so fail tolerance and the AQ correction is also rejecting.

Impacted Customer Types

  • Shipper


Document title Last updated Type
XRN4803 22/Jan/2019 PDF


Initial Review
Solution Consultation
Awaiting Delivery
In Delivery

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