Hello,
I have added new columns in the views and updated CDT and published data store. However, when trying to update the record type I'm getting below error.
Note: The updated fields are reflecting in edit list after resetting the list but getting error in preview.
Expression evaluation error at function a!gridField [line 51]: An error occurred because the record types source is currently unavailable, or the query reached a timeout or memory limit.
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We have recently faced the exact same issue. My understanding is the query is returning too much data and reaching the memory limit. We have limited the fields which the default search box using LIMIT SEARCH TO SELECTED FIELDS in SEARCH AND USER FILTERS of the record. this solved it for us.