VMware ESXi Update on IBM Servers fail

I ran into an error the other day, when updating an IBM based vSphere 6.0 environment using Update Manager, and I want to share my solution with you and myself, so I do not need to find it the next time I run into it.

ERROR: The host returns esxupdate error code:15. The package manager transactions is not successful. Check the update Manager log files and esxupdate.log files for more details.

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