How to reverse CI billing document with API

[theconsultant]

Hello everyone,

We are using "API - Convergent invoicing billable item create" for creating BIT's. The external system sends a request and we create BIT's in SAP side. After creation BIT's system billed and invoiced them automatically.

But some cases, the source external system wants to cancel-reverse the some of billings.

There are two fields in the "API - Convergent invoicing billable item create" "CABllbleItmIsReversal" and "CABllbleItmReversalReason" but when i fill these fields, its create a new reversed BIT and there is no relation between billed or invoiced item previously.

I am using document below,

https://help.sap.com/docs/SAP_S4HANA_ON-PREMISE/69eb4789e1844c4f9dc5fadb73f72196/fe1f47a2d3c848408da...

Can you guide me, how to reverse or cancel billed or invoiced items with API?

Thanks,

Serkan.

[faisal_pc]

I am not sure about the APIs given by SAP from your document. However, believe they will be in turn using the standard function modules like FKK_INV_REVERSE_INVDOC_SINGLE and FKK_INV_REV_BILLDOC_SINGLE for reversing both invoicing and billing. So, an alternate approach would be to create an API yourselves by using above two function modules. Ensure your process is creating directly bits and not via CITs. If it is via CITs, you will have to even reverse the CITs also as they can get rated later and create BITs.