Oracle Message KUP-04085 - duplicate directory object string and file string specified for unload

ERRORduplicate directory object string and file string specified for unload
CAUSEA CREATE TABLE AS SELECT statement was executed for an external table of type ORACLE_DATAPUMP and the same directory object and filename combination was specified multiple times.
ACTIONIssue the CREATE TABLE AS SELECT command again but make sure the combination of directory objects and filenames is unique.