In our client's system equipment would be created automatically upon GRN of a PO.
Equipment would consist of material number and serial number.
Serial number profile would maintain in material master and it would link with equipment category. i.e one serial number profile would relate to one equipment category.
Eq: SE Number profile: Z006 = Equipment category 6
However recently client has experienced discrepancy in equipment categories of equipment created upon GRN
i.e for a material with SEN profile of Z006, equipment created in two different categories. 6 and S
S is the standard SAP category for Customer equipment which client not suppose to use
Customer has GRN the goods at two different storage locations on two different days.
We could not found anything on change logs..i.e no changes to material master or equipment master
Refer below image
Appreciate your valuable inputs to find out the reason.