SAP Message UX899 - Error during conversion - field type conflict (see long text)

Diagnosis
The sending and receiving fields have conflicting types. The receivingfield has type &V1&. Value &V2& was supposed to betransferred to this field, but this conflicts with the type definitionfor the receiving field.
The incorrect field is field &V3& of the receiver structure.Record &V4& of the input file contains an error.

System Response
Conversion to the SAP format is terminated.

Procedure
Correct the data in the input file.