SAP Message UCT8210 - Input conversion for field &1 has invalid format

Diagnosis
The mapping rule for target field &V1& contains a move with a selectedInput Conversion indicator. Therefore, the system performs an inp
ut conversion prior to creating the target data. However, an error inthe input conversion occurred while moving the source key figure to thetarget key figure &V1&. This means that the format used for the inputconversion is incompatible with the target data.

System Response
The system will not perform the move.

Procedure
Examine the mapping rule for field &V1&. Either select the
Conversion Exit indicator or deselect the Input Conversionindicator. Execute the method again.