The SQL Login domain\sqldev has sysadmin rights. No other database roles have been configured. The credential has been configured with domain\sqldev and is called 'sqldev_credential'. I'm certain that the password is correct. The 'sqldev_proxy' has been configured with 'sqldev_credential'. It is active to the 'Operating system' and SQL Server Integration Services Package' subsystems. The proxy account principal has been configured to 'domain\sqldev' of type 'SQL Login'.
The domain\sqldev account is NOT the same account that created the package, and I understand that this can be a problem. The domain\sqldev account has the correct effective permissions to resources that are used outside of the package.
Is there anything I can do so that sqldev_proxy can run the Job?