No physical path is configured for logical file name &1

What causes this issue?

No physical path has been configured for the logical file name, or the
logical path is empty.

System Response

File cannot be validated.

How to fix this error?

Contact your system administrator to configure the logical file name
correctly.

Procedure for System Administrators

In transaction FILE insert a logical path in the configuration of the
logical file name. If there already is a logical path, check whether the
physical path has been defined for the logical path.

Error message extract from SAP system. Copyright SAP SE.