Official Payments/ACI
- 20 Feb 2026
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Official Payments/ACI
- Updated 20 Feb 2026
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This custom integration is not available for self-service setup via the Application Editor. We will be making all adjustments to custom payment files via a support ticket thread.
To integrate with Official Payments/ACI:
Step 1: Configure settings in Official Payments/ACI
Ask Official Payments to send a silent postback (name-value format, not XML!) to: https://YOUR.SLATE.DOMAIN.edu/apply/payment?cmd=aci
Set Error, Cancel and Return URLs to https://YOUR.SLATE.DOMAIN.edu/apply/status.
Official Payments data is based on passing values in custom fields that they call "CDEs".
We will need to know what CDEs are already in place, and what data you want us to pass in those existing fields!For our integration data, we'll need three new CDEs to be set up in your Official Payments configuration:
cde-AppID-X (for our application ID)
cde-TransId-X (for a transaction ID)
cde-Desc-X (for the account description)
In each case, you'll need to replace the "X" with a particular number, but you can use any numbers that are free. So, for example, the CDEs may be:
cde-AppID-5
cde-TransId-6
cde-Desc-8
or any other set of numbers that are free. (We are only looking at the first part).
Step 2: Open a Support Ticket
Provide the following information (via a Support Ticket):
Official Payment URL
Product ID
We will need to know what CDEs are already in place, and what data you want us to pass in those existing fields.
For our integration data, we'll need the three new CDEs you set up in step (1) above
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