A workflow will fail with the below error:
Relevant Error: SDDC Manager DEPLOYMENT lock to perform Backup & Restore operation
SDDC Manager 5.x
SDDC Manager deployment lock is in effect per the error message. There is likely a stuck backup or restore operation causing the lock.
Please search through tasks to determine if a job has failed and attempt to remediate by restarting the workflow or cancelling the operation. If this fails contact Broadcom Support for further assistance.