SAP Message RSM117 - Error in an arithmetic operation or a data conversion

Diagnosis The self-defined conversion routine for the field &V1& attempted toexecute an invalid arithmetic operation or an invalid conversion of datatypes. System Response The IDoc processing was terminated and indicated as incorrect. Areimport of the IDoc is possible at any time. Procedure Check the self-defined conversion routine for field &V1& for accuracy.Pay special attention that the used data types and lengths agree withthe definitions of the InfoSource. Where necessary correct the existing data errors and restart theprocessing of this IDoc. If the error reoccurs, search for the relevant SAP Notes in the SAPSupport Poratl and, if necessary, create a customer message.