I have a scenario where we are selling some services. Process is to create sales order --> Create billing document in reference to sales order & then release it to accounting. I am using materials of type DIEN( service) for the purpose and have customized the sales order / item category. Process is working fine till creation of accounting document but the accounting document is missing sales order/item in it [as account assignment]. I am not sure what config I am missing.
Attached file shows where I am expecting the sales order / item to be seen.
Please provide hints on this.
Thanks in advance.