No heading defined for display variant &

What causes this issue?

No heading is defined in your logon language for the chosen display
variant &V1&.

System Response

Processing is terminated.

How to fix this error?

<ZH>Procedure for the system administrator</>
Define a heading appropriate to display variant &V1&.
<DS:TRAN.FAKP>Proceed</>.

Error message extract from SAP system. Copyright SAP SE.