If you receive the Sage Intacct error "The Check number... is invalid" when exporting a Payment Receipt from Stampli, the issue is typically related to the Payment Reference field on the invoice.
What Causes This Error?
When a Payment Receipt is exported to Sage Intacct, Stampli creates both:
A bill
A payment record
The value entered in Stampli's Payment Reference field is sent to Intacct as the payment's check number or reference number.
If the value does not meet Intacct's validation requirements, the export may fail with a "The Check number... is invalid" error.
Common causes include:
The Payment Reference is blank.
The Payment Reference duplicates an existing payment reference.
The Payment Reference contains invalid characters.
The Payment Reference does not meet your Intacct configuration requirements.
How to Correct the Error
Open the invoice in Stampli.
Confirm that the Invoice Type is set to Payment Receipt.
Locate the payment details section.
Update the Payment Reference field with a valid check number or payment reference.
Save the invoice.
Export the invoice again.
If the Payment Reference Field Cannot Be Edited
If the Payment Reference field is locked or unavailable for editing, the invoice may need to be returned to an editable AP workflow status.
An AP Authorizer or administrator can return the invoice to AP Authorization, allowing the payment information to be updated before attempting the export again.
Still Receiving the Error?
If the Payment Reference appears valid but the export continues to fail, review your organization's Sage Intacct payment numbering requirements. Some Intacct environments enforce specific formatting rules or require unique payment reference numbers.
If you need additional assistance, contact Stampli Support through the Support Chat available within the application.