Copy fails with error "Error/Warning Detected: IMP-00003: ORACLE error 1 encountered" (4300396)

Copy fails with following errors indicating an Oracle error ORA-0001 is encountered on target:

Copy server log portion from source:

Tue Jun 29/19:08:21.886:: 003: Sending end of transmission message
Tue Jun 29/19:08:22.477:: 003: ERROR: Import error on target: rows = 111000 imp error = 19 IMP-00019: row rejected due to ORACLE error 1 at sync/svr/sync_export_thread.cpp:553
Tue Jun 29/19:08:22.484:: 003: WARNING: Thread asked to stop, stopping export at sync/svr/sync_export_thread.cpp:266
Tue Jun 29/19:08:22.484:: 003: WARNING: Sent a server control stop message (line=268) at sync/svr/sync_export_thread.cpp:679
Tue Jun 29/19:08:22.484:: 003: Export process returned status: 0
Tue Jun 29/19:08:22.535:: ERROR: A thread failed on target at sync/svr/sync_svr_messager.cpp:745
Tue Jun 29/19:08:22.539:: Abort remaining threads

Copy client log log portion from target:

Tue Jun 29/19:08:16.643:: 001: Importing table "table_name"
Tue Jun 29/19:08:22.279:: 001: Export is now complete
Tue Jun 29/19:08:22.431:: 001: Error/Warning Detected: IMP-00019: row rejected due to ORACLE error 1
Tue Jun 29/19:08:22.432:: 001: Error/Warning Detected: IMP-00003: ORACLE error 1 encountered
Tue Jun 29/19:08:22.432:: 001: Error/Warning Detected: ORA-00001: unique constraint (owner.name) violated
Tue Jun 29/19:08:22.438:: 001: ERROR: Stopping import thread due to error at sync/clt/sync_import_thread.cpp:141
Tue Jun 29/19:08:22.438:: 001: ERROR: Sending error to server (line=281) at sync/clt/sync_import_thread.cpp:469
Tue Jun 29/19:08:22.438:: 001: WARNING: Import thread asked to stop, terminating imp process at sync/clt/sync_import_thread.cpp:283
Tue Jun 29/19:08:22.439:: 001: External process pid = 22859 sent SIGTERM
Tue Jun 29/19:08:22.462:: 001: Import process returned status: 0
Tue Jun 29/19:08:22.534:: Import thread 1 aborted
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