Current PPIRs

You can view current Programme Participant Information Requests (PPIRs) on this page.

For more information on PPIRs, please email PPC@mhhsprogramme.co.uk 

Proposal to descope the Qualification Testing Framework (QTF) Central Switching Service (CSS) stub


This request is only relevant to Non-Systems Integration Testing (SIT) Suppliers going through Qualification. 
 
The Programme has issued a PPIR on behalf of the Code Bodies, focusing on the proposal to descope the Qualification Testing Framework (QTF) Central Switching Service (CSS) stub as discussed at the Non-SIT Supplier & Agent Qualification Testing Subgroup (SAQTSG) on Wednesday 2 April 2025. 
 
If the QTF CSS stub were to be descoped, each CSS step would remain in the Qualification Test Cases (QTCs) for business process visibility, but the QTF would not send or receive any CSS messages. The key advantages and disadvantages for this proposal are clearly set out in the PPIR itself. 
 
Please respond to this PPIR by completing the PPIR Form below:

PPIR Form
 
Responses are due by 17:00 on Thursday 17 April 2025. 
  
If you have any questions about this PPIR, or related to the QTF and/or BETA testing, please email the Code Bodies at MHHSQualification@elexon.co.uk 

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Sandbox Testing

Proposed use and value provided from the defined Sandbox using the User Integration Testing (UIT) and Systems Integration Testing A (SIT-A) environments

On Monday 24 March 2025, the Programme issued a Programme Participant Information Request (PPIR) focused on Sandbox Testing – Proposed use and value provided from the defined Sandbox using UIT and SIT-A environments. 

The purpose of this PPIR is to seek views from all participants on:

  • The value for participants in providing a Sandbox service
  • What the potential uses might be
  • What the best timings might be

More details are now known about how Qualification Testing will run (Supplier & Agent and Non-SIT Licensed Distribution System Operator (LDSO)), how participants will use the relevant Test Harnesses and how these will operate alongside the associated Test Data approaches. On this basis, the potential limitations and opportunities of using the UIT environment are now better understood by all parties and worth revisiting in the context of Sandbox.

The Programme will use these PPIR responses to assess and propose any changes to the End-to-end (E2E) Sandbox Guidance and the associated development of the E2E Sandbox Test Data Approach and Plan.

Please review the additional background notes first, before providing your responses in the PPIR Form. Both of these are available below:

Sandbox Testing PPIR - Additional Background Notes

PPIR Form

Responses to this PPIR are due by 17:00 on Thursday 3 April 2025. 

The results will be discussed at April’s Qualification Working Group (QWG) and the Programme Artefacts and Programme Plan will be updated in line with the agreed way forward.

If you have any questions, please email PPC@mhhsprogramme.co.uk