The bill-to information should not be provided in the cXML data as it defaults from the bill-to information included on the purchase order being referenced. If you include the bill-to information in the cXML, both the bill-to name and address must match exactly the associated address in Coupa.
If the customer does not have dedicated bill-to addresses (they base this off the ship-to information), leave the
<Name> tag blank within your cXML, and instead add the bill-to name within the
<DeliverTo> tag in the Postal Address.
Customers are advised to have a single bill-to address for each chart of accounts (COA).