SAP Message 8A254 - No event defined for numbering sales organization &

Diagnosis
You have not specified at which point in time the official Argentinedocument number should be determined. On the other hand, the deliverytype is specified as relevant for Argentine document numbering.

System Response
The system cannot determine an official Argentine document number.

Procedure
Please specify at which point in time the official Argentine documentnumber should be determined. This specification must be maintained persales organization.