Message SAP VT639 - Calculation type not allowed (valid values &2 and A) DOCUMENTATION NOTES DiagnosisCalculation type &V2& is not permitted.ProcedureCondition type &V1& is only relevant for deferred settlement in sales.For this condition type, only the calculation type &V2& and thecalculation type A (percental) for accrual are valid. 392066 Maximum values cannot be entered per calculation rule