# Invoice Addenda Data
source: https://developer.mastercard.com/iccp/documentation/05_api_reference/soap_api/purchaserequest/invoice_addenda_data/index.md

Note: Invoice addenda data is not supported for ICMP.

Buyers pay multiple invoices with a single VCN payment. To reconcile the payment against the invoices, buyers can add the invoice details to the purchase request. The ICCP API sends the invoice addenda data in the payment notification to the supplier. They provide details of the invoices and amounts to pay.

For each invoice, include the invoice number, amount being paid on the invoice, the currency code, invoice date, and purchase order (PO) number.
Suppliers configured in ICCP receive an email containing the invoice addenda records as an attachment with VCN details.

## Prerequisites {#prerequisites}

To add invoice addenda data, use the [submitpurchaserequest](https://developer.mastercard.com/iccp/documentation/05_api_reference/soap_api/purchaserequest/submitpurchaserequest/index.md) call to create a purchase request with:

* A purchase template that supports the invoice addenda data feature.
* The `addendaDataExpected` parameter set to Y.