There are two ways to add/change a PO Number on your NYSE Market Data Invoice. From the Data Services Dashboard:

• To add a new PO Number that will be reflected on all future invoices, access the Account Profile page.
• To add or change a PO Number on a previously generated invoice, access the Invoice Viewer to update each invoice individually. Note: This update will not be reflected on future invoices.

If you are not a registered Data Services Dashboard user, please register .