System error when accessing function module &

What causes this issue?

An error occurred when accessing function module &V1&.
INCLUDE 'NA_FU_NO' OBJECT DOKU ID TX LANGUAGE EN

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_SYSVERW' OBJECT DOKU ID TX LANGUAGE EN
INCLUDE 'NA_SYSVW_HINW' OBJECT DOKU ID TX LANGUAGE EN
Possible reasons why the error occured:
Basis function FUNCTION_IMPORT_INTERFACE was terminated with exception
ERROR_MESSAGE.
Basis function SFCS_FA_FUNCTION_INVOCE was terminated with exception
GENERATION_ERROR.

Error message extract from SAP system. Copyright SAP SE.