SAP Message CACSIB_EDT206 - Record type &1 may only be used once in file &2

Diagnosis
Record type &1& occurs more than once in file &v2&. External datatransfer only accepts one record of record type &v1& for each file.

System Response
Processing was terminated because the input file contains errors.

Procedure for System Administration
Check the structure of file &v2& and make sure that record type &v1& isonly used once.