PMD GB Single Market: If a Product Master Data (PMD) request targets only the GB market, the system shall respond with a data validation error (#A16) indicating "Market not found" (#A22), resulting in a failed request.

PMD Multi-Market: Similarly, if GB is among the target markets but not the only one in a PMD request, the system shall respond with the same error as a PMD GB Single Market and fail the request. • PPD Single Market: For a Product Pack Data (PPD) request targeting only the GB market, the system shall record a market not found audit event "Market not found" (#A22), respond with a data validation error data validation error (#A16), and fail the request.

PPD Multi-Market: If GB is among the target markets but not the only one in a PPD request, the system shall record the audit event, distribute the request to non-GB markets, and respond with a success message including an error code (#A18) indicating "Disconnected Market GB".

PSUM Single Market: In a Pack State Update (PSUM) request targeting only GB, the system shall record the audit event, respond with a “Market not found” (#A22) error, and fail the request.

PSUM Multi-Market: If GB is among the target markets but not the only one in a PSUM request, the system shall record a market not found audit event “Market not found” (#A22), distribute the request to non-GB markets, and respond with a success message.

In a Recall Batch (RCB) request targeting GB, the system shall record a market not found audit event “Market not found” (#A22), respond with a confirmation message, distribute the request to non-GB markets, and respond with a confirmation message indicating the market not found error for GB.

For a Verify Bulk of Packs (VBOP) request targeting GB exclusively or where GB was the only successful distribution, the system shall respond with a market not found error and fail the request. - If GB is among the target markets but not the only one in a VBOP request and at least one non-GB market has successfully received packs, the system shall distribute the request to those markets and respond with success.

In a Product Withdrawal (WDP) request targeting GB, the system shall record a market not found audit event “Market not found” (#A22), respond with a confirmation message, distribute the request to non-GB markets, and respond with a confirmation message indicating the market not found error for GB.

For Report (RPT) requests, if a Batch Recall, Pack Disclosure, Packs by Status, Packs Status by Batch, or Withdrawn Product report includes GB market records, no request shall be sent to the GB national system. The system shall display a market not found (#A22) error for GB in the section detailing errors received from national systems.