Windows User at times may lack the permission to run the SQL Service Integration Services. If there is a lacking then as a workaround:
1. Right-Click on SQL Server Agent > Jobs > BDI_UC_ETL and select Properties
2. Select Steps on the left hand side
3. Select the actual step
4. Select Run as "SQL Server Agent Service Account"
This is a temporary workaround, the permission where the Proxy account (which needs to run the ETL) needs to be given: The ability to execute SSIS packages
Regards
Jitesh