Reversal of Billing Doc. - POS Interface

Dear All,

We have an inbound / outbound process using IDOCs for updating SAP for Retail & POS.

We found that a certain billing document has an enormous article cost around 430,000/SAR (real cost 9.00/SAR )

We want to reverse this document, do the cost change in the article then post the Billing document again.

Is there any way to do this?

Checking the Billing Doc. Flow:

I created this discussion because I tried using VF11 but the system shows

No billing documents were generated. See log

Message no. VF032

I check the log:

I will really appreciate any recommendation.

Regards,

Ber