Customer number not in the inspection lot for a make to order scenario
I know that standard SAP will get the Customer number into Insp. lot only for insp. types 10/11/12. I am wondering if someone know a way to get the customer no. into insp. lot for insp. type 04 where the material is make-to-order scenario and the Production/Process order has the Sales order and customer no. without activating User-exit. The quality users want to be able to see the customer no. in insp. lot without having them to go to process order.
It makes no sense to me why the customer no. is not brought into insp. lot when that is available in the Prod/process order, which can further be used to select the customer specific insp. plans for 04 insp. type Insp. lot without using Variant configuration.
Any light on this topic is appreciated.