SAP Message AJ127 - Not possible to update operand &1 of the operand category &2

Diagnosis
An operand update is to occur, for which existing values are to beoverwritten in the target operand. Currently this is only possible foroperands of the categories QUANT, AMOUNT and FACTOR. The currentoperand to be updated has a different operand category.

Procedure
An internal error has occurred.
INCLUDE ISU_SAP OBJECT DOKU ID TX