Error received when attempting to run a back up:
"The process cannot access the file because it is being used by another process".
This issue may occur if antivirus software is running in the same location of the backup file or mutliple jobs may be simultaneously scheduled to backup the same database.
For additional information relating to environment, refer to Microsoft Article ID:287309 - "Error Message: The Process Cannot Access the File Because It Is Being Used by Another Process":
Schedule jobs to run sequentially, not simultaneously.