Oracle Message ORA-19943 - The current database incarnation changed during backup

ERRORThe current database incarnation changed during backup
CAUSEThe backup failed because the current database incarnation was changed during the backup. One of the following events caused this incarnation change: - The database was opened using ALTER DATABASE OPEN RESETLOGS statement. - RMAN command RESET DATABASE TO INCARNATION was issued. - If this happened on physical standby database, then redo apply has applied redo data from a new database incarnation.
ACTIONRe-try the backup.