No posting block defined for blocked business partners

What causes this issue?

You have not defined a posting block in Customizing for blocked partner
items.

System Response

The function cannot be executed.

How to fix this error?

Enter the posting block in Customizing.
INCLUDE FICA_NA_CUST_2 OBJECT DOKU ID TX

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.