Oracle Message ORA-26513 - push error: master proc. string$RP.string failed for trans: string seq: string

ERRORpush error: master proc. string$RP.string failed for trans: string seq: string
CAUSEA conflict/error occurred at the master site while executing a $RP.rep_insert(), rep_update(), or rep_delete() function which was not handled by conflict resolution logic at the master.
ACTIONNotify master site system adminstrator or DBA.