we have issue that users are deactivating assets by using t code ABUMN and ABT1N befor checking POs (normally it is not possible to check each PO). but when same asset is existed in PO with GRN or Invoice they are not able to proceed further since used asset in PO was deactivated.
In this case, we used to do activate that asset through screen lay out option. once the GRN ( Non valuated )or invoice done we bring the change back . this is temporary solution which we are following.
My concern is before retiring or closing any asset, system should check whether this asset is assigned to any POs.
Could you please suggest the logic for validation for this. if it is possible through Exit module. please explain indetails