Select an entry with an existing hierarchy.

What causes this issue?

Either
you did not select any lines
or you selected a line, for which there is no program hierarchy in the
summarization database for this summarization version and investment
program

System Response

The function cannot be carried out.

How to fix this error?

Select a line, for which the "hierarchy exists" indicator is set.

Error message extract from SAP system. Copyright SAP SE.