Unable to login with Certificate Manager local user

I've created a local user account with the Certificate Manager role on All partitions - and have enabled tmsh access. However, when I attempt to login with this account - either GUI or SSH - I am receiving a login failed message. We don't have any password enforcement in place and access restrictions are tied to the RFC1918 address space, so that is not coming into play. We have remote auth (TACACS) enabled with fallback to local and other local accounts are able to login successfully.

Thoughts?

Version: 17.1.1.2

Username - cert-mgr

Role - Certificate Manager

Partition: All

Terminal Access: tmsh