SAP Message UCT8062 - Mapping rule for &1, row &2: "Apply rule" operator not defined

Diagnosis
The mapping rule for target field &V1& contains an undefined applyexisting rule operator in row&V2&.

System Response
The settings cannot be saved. The system issues this error message.

Procedure
Either specify a reusable mapping rule in the details for the reusableoperator, or choose a reusable mapping rule using input help.Alternatively, if the reusable mapping rule contains only a move,specify the substitution field.