10.5.1 error Column value is NULL-Locks on SDE

[ZachChervenak]

I am unable to view any locks(need to remove schema locks so I can create new fields in SDE FC) on any of my SDE geodatabases and feature classes within, in my TEST or PROD environments. The error I get is "REFRESH: Column value is NULL". I am using version 10.5.1 and just recently started receiving this error. Any idea how to fix this?

[RyanUthoff]

I've received this error message as well in 10.6.1 using Microsoft SQL databases and am curious on what is causing this and how to fix it.

[Asrujit_SenGupta]

Check this link: https://community.esri.com/thread/206938-error-trying-to-view-locks