Radio button XML is not selected

What causes this issue?

Before you can import a file, you first need to select XML as the
method for determining the sender structures. Select the radio button
and press return.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.