Data Source-level authorization check not possible

What causes this issue?

The authorization check on level of Data Sources and categories is not
possible for user &V1&.
There are two possible reasons:
- The runtime load for Enterprise Search as a whole is currently not
available.
- The runtime data for user &V1& is not built - this can be simply
because he does not use Enterprise Search but does not mean he lacks
authorizations.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.