The following errors occur when exporting data by using DataPump:
UDE-00008: operation generated ORACLE error 31626
ORA-31626: job does not exist
ORA-39086: cannot retrieve job information
ORA-06512: at "SYS.DBMS_DATAPUMP", line 2772
ORA-06512: at "SYS.DBMS_DATAPUMP", line 3886
ORA-06512: at line 1
Check the log which shows exporting has been successful.
... .. . Master table "SYS"."SYS_EXPORT_SCHEMA_01" successfully loaded/unloaded Dump file set for SYS.SYS_EXPORT_SCHEMA_01 is: C:\TEMP\TEST.DMP Job "SYS"."SYS_EXPORT_SCHEMA_01" successfully completed at 12:08:38
So it is a bug, and this error can be ignored.