The system can tell by the order reason that a request document comes from the automatic routines of the SD self-billing procedure.

The order reason also controls whether and how the billing item is relevant for retro-billing.

When processing a self-billing document, the system checks that the order reasons are correctly set. If they are not, the system terminates processing with an error message in the log.

You have either:

• copied from client 000 SAP's order reasons delivered specially for the SD self-billing procedure
• defined your own order reasons for SD self-billing, making sure to set the Usage of order reason for retro-billing as shown in the table below.

You set the order reasons in the general parameters, under Settings ® Maintain General Parameters in the Self-Billing Monitor.

These are the suggested settings, using the example order reasons from client 000:

*Usages of order reason for retro-billing
1 = Request or credit/debit memo is for self-billing
This processing type is assigned to the order reasons used for transactions that are relevant to value only. In the retro-billing process, documents with these order reasons are included in calculating the total value, but no new price determination is carried out.
2 = Credit/debit memo is for retro-billing in case of price change
This processing type is assigned to the order reasons used for transactions that are relevant to value and quantity. In the retro-billing process, a new price determination is carried out for documents with these order reasons. A new price determination is always carried out for billing documents (the initial billing document in self-billing) in retro-billing.

You must ensure that the self-billing order reasons are not used for any other normal postings, if you want to use the order reasons to identify documents from automatic SD self-billing. The verification step checks if the settings in the order reason are correct.