In the documentation section for ‘Installing the Agent for Database Jobs and Events’, it’s stated that ‘in database jobs, you must still specify a Login object that includes a suitable entry for the particular agent even if you use the Windows authentication. The Login object's user and password are neither used nor checked.’
However, if all of the requirements are met as stated in the section 5, ‘set up the system environment (host)’ for ‘if the agent starts under Windows and accesses an MS SQL database, you can use the relevant Windows user in order to log on to the database’, the job can be ran without the login object.
Release : 12.3.X
Component : AUTOMATION ENGINE
The issue is being fixed by documentation team.