SAP Message VK330 - No accumulated billing values exist

Diagnosis
The following causes are possible:
RESET N1
There is no billing document for the condition record that youselected.
None of the billing documents for the condition record that youselected have been released for updating.
Updating condition records in billing is not active.

Procedure
Concerning 1 and 2:
Check the billing documents created for the condition record that youselected.
Zu 3:
Activate the updating for condition records in billing.
INCLUDE 'NA_CUST_MAINTAIN' OBJECT DOKU ID TX LANGUAGE E