Calculation actionAction that is used to carryout a custom calculation on the base amount for the calculation of the element in the case where this base is other than the Ex-tax amount or Tax incl amount for the document. This calculation basis calculated will be Ex-tax or Tax incl as a function of the value of the calculation basis (Ex tax/Tax inc). This action will be executed during the calculation of the element value. It must be programmed in a process whose name must be entered in the field in the follows.