Select a valid line

What causes this issue?

You have chosen a function that only applies to the line for which you
want to generate replacement values.
Before generating replacement values, ensure that
The <DS:DE.E_FL_REPLACE_REQ>Replacement required</> field has been
selected.
The <DS:DE.E_FL_REPLACE_SUCCESS>Replacement successful</> has <ZH>not
</> been selected.

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?

Select the line for which you want to generate profile values.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.