This function can only be executed for a single line

What causes this issue?

You have executed a function (internal code &V1&) while more than one
line in the list was selected.
This function processes individual items only.

System Response

How to fix this error?

When executing this function, you can select only one line.
Alternatively, select no line and position the cursor on the line that
you want to process.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.