How can I view the status of an invoice in ACE regarding whether or not it has been paid?

ACE itself is not described in the provided material, but invoice payment status in Microsoft billing experiences is typically exposed directly on the invoice record or in the billing/earnings workspace:

1. Go to the relevant billing or earnings workspace (for example, Billing in Partner Center or the equivalent billing area in ACE).
2. Locate the specific invoice by invoice number or customer.
3. Check the Payment status or similar column on the invoice:
   • Status values commonly include Paid, Due, or Past due/Overdue.
   • The invoice view usually also shows Paid amount and remaining Due amount.
4. If the platform supports exports (for example, Download earnings-default in Partner Center), download the file and look for a payment status field for that invoice/claim.

If the invoice was just paid, allow several business days for the payment status to update in the system before concluding it is unpaid.

References:

• Understand your invoice
• Billing overview for Partner Center Cloud Solution Providers program (CSP)
• Business applications for incentive patterns and policies frequently asked questions (FAQ)
• Outstanding invoices (preview)