BAPI_PO_CHANGE - Account assignment serial number issue
I am modifying Service PO with BAPI_PO_CHANGE.
I am passign A/c Assignment with WBS_Element value and serial number '01' for individual line.
PO has A/c Assignment catagory P(Project).
But the existing PO which i want to modify, had Serial number '02' for A/c assignemnt serial number.
So it is giving Short dump with raising exception for the class of Account assignnment handler.
What need to dofor such A/c assignment catagory in Service PO Case.?