Before placing an item-level request, mod-patron fetches additional information about the item from inventory. This won’t work in an ECS environment because item might be located in a different tenant, and mod-patron is unable to make cross-tenant calls. The solution is to move as much logic as possible to mod-circulation-bff, which knows how to make cross-tenant calls. This additional logic must be incorporated into the existing endpoint POST /circulation-bff/create-ecs-request-external

In scope:

• remove fetching item/holding/rules before placing an item-level hold

• call POST /circulation-bff/create-ecs-request-external for both item and title level holds

• adjust existing tests accordingly

• write new tests if necessary