Our jobs have been running fine so far w/o any issues on a specific workspace. These jobs read data from files on Azure ADLS storage containers and dont use the hive metastore data at all.

Now we attached the unity metastore to this workspace, created necessary storage credentials, configured the storage locations, providing permissions to the specific User group/service principal. The jobs started to fail with the "UnauthorizedAccessException: PERMISSION_DENIED: User does not have READ FILES on External Location " error message.

We removed/deleted the storage location configuration on UNity and tis time the jobs executed successfully.

What could be missing here?