Control-M: 23_EUQ - Event: JOB NOT OK App: EUROPE2-IS-ECC-SBX-RSE Job: RMAN-INCREMENTAL-BACKUP Folder: 9EUSX23_EU2-DATABASE-ECC
RMAN Incremental backup failed because it overlapped with Full backup from 20th. 
The full backup on 20th took longer time to finish extending till 21st Feb resulting in conflict between Full backup and Incremental backup.