How to send taxes on additional charges on Purchase Order to Ariba Network

One of the more common requirements of the Customers is to include taxes on additional charges in the Purchase Order and send it over to the Ariba Network, and copy tax for allowances and charges from purchase order to standard invoice.

In this blog, I will explain the steps required to achieve this integration for Material Purchase orders.

First of all, populate the additional charges and tax information in the segment /ARBCIG_ORDERS/IDOC/E1EDP01/E1EDP05 in ARBCIG_ORDERS IDOC, which can be done using User Exit – EXIT_SAPLEINM_002 INCLUDE ZXM06U02.

After the implementation, outbound IDOC ARBCIG_ORDERS will contain Charge Description, Amount, Tax Category, Tax Rate, and Tax Amount as shown in the below IDOC screenshot:-

This screenshot is just for reference.

IDOC screenshot

Secondly, implement the CIG mapping to transfer the IDOC data to Ariba Network cXML. In order to do this mapping, we have to map the IDOC segment(shown above) to the  /cXML/Request/OrderRequest/ItemOut/ItemDetail/UnitPrice/Modifications segment in the cXML Document Type OrderRequest following its child segments.

After the mapping is deployed, cXML OrderRequest payload will contain the information of the additional charge as shown below:-

cXML screenshot

Finally, when the PO is replicated to the Ariba Network, the charges will appear on the Ariba Network UI as shown below

PO on Ariba Network

Note: Tax information will not be appearing on the UI but it is present in the cXML

Once the additional charges with tax appear on the Purchase Order, we can copy them to the Invoice automatically by checking the below Default Transaction Rule in the Buyer Ariba Network.

Default Transaction Rule

Ultimately, when the Supplier create an Invoice from the PO, then additional charges will get coped to the Allowances and Charges section in the Invoice as shown below:-

Invoice on Ariba Network