Oracle Error Message
ORA-39142: incompatible version number string in dump file “string”
Reason for the Error
A dump file was specified for an import operation whose version number is incompatible with the dump file version of the Data Pump product currently running on the system. Usually this message indicates that the dump file was produced by a newer version of the Data Pump export utility.
Solution
Import this dump file using the Data Pump import utility with the same version as the export which created the file.