Error reading statistical data from the database

What causes this issue?

An error occurred reading data from the database.

System Response

The system was unable to read the required statistical data from the
database.

How to fix this error?

Choose <LS>Refresh</> to update the table of contents, or restart the
workload monitor.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.