An issue has been identified with the Market Design for supporting the ESBNG when communicating the completion of a QH meter works job. The issue arises when ESB Networks complete a NQH to QH exchange.
In this case ESB Networks would send a 332 message and a 331 message to a Supplier who would already have the end customer information for the site.
The ESBNG would only receive the 331 message and would not have the end customer information.
They would receive this message because the site had become QH.