Distribution group &1 was not created in Customizing

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Enter the distribution group in Customizing.
INCLUDE FICA_NA_CUST_2 OBJECT DOKU ID TX

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.