CP1615 Change Proposal Consultation
New versions of the P0287 and P0288 dataflows will be implemented at MHHS Milestone M11, consequently the IDD Part 1 spreadsheet must be amended to reflect the new versions of these dataflows. Suppliers, VLPs, VTPs and AMVLPs will need to amend their systems in time for 6 November 2025 so that they do not reject the new versions of the new versions of the P0287 and P0288 data flows.
Status
Who will this impact?
Suppliers, VTPs, VLPS, AMVLPs will need to amend their systems so that they do not reject the new versions of the new versions of the P0287 and P0288 data flows.
What is proposed?
At Market-wide Half Hourly (MHHS) Milestone M11 on 22 October 2025, new versions of the P0287 and P0288 dataflows will be implemented. The change updates the Interface Definition and Design (IDD) Part 1 spreadsheet to include specifications of the , which are required to support MHHS CCC Ids (Consumption Component Class Identifiers) which use a 3-digit format (Integer(3)), unlike the current 2-digit format (Integer(2)).
This is necessary because MHHS MSIDs will use CCC Ids in the range 100–999, which cannot be represented in the current format.