First, select an object or an infostructure

What causes this issue?

You want to check whether archive files were in fact indexed by info
structures. You have not, however, selected a line that is relevant for
an archiving object or an infostructure.

System Response

The check can take a relatively long time, even for individual
infostructures. The system therefore prohibits this check from being
carried out for all infostructures at the same time.

How to fix this error?

Select (double click) an archiving object or an infostructure.

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.