MySQL error code

MySQL error 4085

MySQL server error 4085 is ER_CANNOT_PURGE_BINLOG_WITH_BACKUP_LOCK, reported with SQLSTATE HY000.

Could not purge binary logs since another session is executing LOCK INSTANCE FOR BACKUP. Wait for that session to release the lock.

Error	4085
Name	ER_CANNOT_PURGE_BINLOG_WITH_BACKUP_LOCK
SQLSTATE	HY000
Group	Server errors