Internal error: Function code &1 is not active

What causes this issue?

Function code &V1& is not active in dynpro &V2& in program &V3&.

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?

INCLUDE NA_SYSADMIN1 OBJECT DOKU ID TX

Procedure for System Administrators

INCLUDE NA_SAP_HOTLINE OBJECT DOKU ID TX

Error message extract from SAP system. Copyright SAP SE.