SIT Operational Test Scenarios and Test Cases
The Programme has published the Systems Integration Testing (SIT) Operational Test Scenarios and Test Cases and is issuing Test Scenarios and Test Cases for SIT Operational Testing, to incorporate ongoing maintenance.
You can view the corresponding Release Note below, and view information and artefacts relating to the individual themes via the links at the bottom of this page.
If you have any questions, please email the Testing team at Testing@mhhsprogramme.co.uk

SIT Operational Release Notes
Short Name | Doc Number | Theme | Version |
---|---|---|---|
MHHS SIT Ops Theme Release Note - 18 March 2025 | MHHS-DEL3549 | SIT Ops Release Notes | 1.0 |

SIT Operational Theme 3 (Batch 2) Supplementary Test Cases
On Wednesday 19 February 2025, the Programme issued Systems Integration Testing (SIT) Operational Supplementary Test Cases for Theme 3 Batch 2: Data Integration Platform (DIP) Onboarding and Offboarding for industry consultation.
These are Test Cases that were not approved at the Systems Integration Advisory Group (SITAG) in December 2024.
You can view the Supplementary Test Cases in the library below, along with the Release Note via the link below. The Release Note also includes Migration Test Cases that have been brought under Operational testing as previously advised.
SIT Operational Theme 3 (Batch 2) Supplementary Release Note: 19 February 2025
This consultation has now closed. Thank you to everyone who responded.
You can view the Consolidated Comments Log from this consultation below:
SIT Operational Theme 3 (Batch 2) Supplementary Test Cases Consolidated Comments Log
The Testing Team have reviewed the comments and the Systems Integration Testing Advisory Group (SITAG) approved these Test Cases on Wednesday 19 March 2025.
If you have any questions, please email Testing@mhhsprogramme.co.uk
SIT Operational Theme 3 (Batch 2) Supplementary Test Cases
Short Name | Doc Number | Theme | Version |
---|---|---|---|
SITOPS_OPC009_RM_COS v0.7 | MHHS-DEL3320 | SIT Op Theme 3 - Batch 2 Supplementary | 0.7 |
SITOPS_DIP02_DIP Onboard error handling v0.3 Redlined | MHHS-DEL3235 | SIT Op Theme 3 - Batch 2 Supplementary | 0.3 |
SITOPS_DIP06_DIP Offboarding Technical Supplemental v0.1 Clean | MHHS-DEL3463 | SIT Op Theme 3 - Batch 2 Supplementary | 0.1 |
SITOPS_OPC007_COA v0.72 | MHHS-DEL3313 | SIT Op Theme 3 - Batch 2 Supplementary | 0.72 |
SITOPS_OPC008_COS v0.6 | MHHS-DEL3319 | SIT Op Theme 3 - Batch 2 Supplementary | 0.6 |
SITOPS_DIP01_DIP Onboarding successful v0.4 - Redlined | MHHS-DEL2699 | SIT Op Theme 3 - Batch 2 Supplementary | 0.4 |
SITOPS_DIP01_DIP Onboarding successful Supplemental v0.4 - Clean | MHHS-DEL2699 | SIT Op Theme 3 - Batch 2 Supplementary | 0.4 |
SITOPS_DIP06_DIP Offboard of a Participant v0.4_Redlined | MHHS-DEL2704 | SIT Op Theme 3 - Batch 2 Supplementary | 0.4 |

Where can I find the individual Test Scenarios and Test cases?
You can view information and artefacts relating to the individual themes on the following pages of this website:
- SIT Operational: Theme 1 - Metering Point Registration System (MPRS) / Licensed Distribution System Operator (LDSO) and Business Requirements
- SIT Operational: Theme 2 - Security & Operational Choreography
- SIT Operational: Theme 3
- Batch 1: Service Management
- Batch 2: Data Integration Platform (DIP) Onboarding, Certificate/Domain renewal and Business Continuity Disaster Recovery (BCDR)
If you have any questions, please email the Testing team at Testing@mhhsprogramme.co.uk