Default value for display variant is missing for &

What causes this issue?

The line layout for displaying proposed payments could not be
determined.

System Response

Processing is terminated.

How to fix this error?

<ZH>Procedure for the system administrator</>
Define a default value for the display variant for transaction &V1&.
<DS:TRAN.FAKP>Proceed</>.

Error message extract from SAP system. Copyright SAP SE.