Adding Scalapay through Adyen
For enterprise and multi-region setups already running on Adyen, adding a pay-later option is handled through your existing payment method configuration.
Getting live on Adyen
The order below matters — messaging before testing, testing before live traffic.
Request the payment method
Add Scalapay to your enabled payment methods through your Adyen Customer Area.
Configure per merchant account
Enterprise setups usually run several merchant accounts. Each one is configured separately, per region and per storefront.
Handle the redirect flow
Scalapay is a redirect method. Your integration needs to handle both the return and the abandonment path.
Add on-site messaging
Place the installment message on product and cart pages, not only at the payment step.
Six things specific to Adyen
The details that cause support tickets if you skip them.
Multi-region rollouts
Enable per merchant account rather than globally. Availability and order limits differ by market.
Notification webhooks
Use Adyen notifications to confirm the payment result rather than depending on the shopper returning to your site.
Order limits
Orders run from $200 to $5,000 in the US. You can set a narrower range per storefront.
Refunds
Issue refunds through your normal Adyen flow. We reconcile and adjust the customer plan. How refunds work →
Reconciliation
Scalapay transactions appear in your existing settlement reports alongside other methods.
In-store
Physical retail runs through an in-app barcode or tap-to-pay rather than through terminal hardware.
Test the paths that are not the happy one
Every integration works when the customer does exactly the expected thing. Problems come from the other cases.
- A customer who abandons at the approval step — they must land somewhere sensible with the basket intact.
- A declined order — this is a normal outcome, not an error. Send them back to a checkout with other options available.
- A partial refund — check the customer plan recalculates and your own reporting matches.
- An order outside the range — validate against $200 to $5,000 before showing the option, so nobody is offered something that will fail.
Testing only the successful order is the most common reason an integration causes problems in its first week.
Adyen integration FAQ
What developers and store owners ask before starting.
Can I add Scalapay to an existing Adyen setup?+
Does it support multiple regions?+
How is the payment result confirmed?+
Does it change my settlement reporting?+
How are refunds processed?+
Does it work in physical stores?+
Other integrations
Same account, different platform.
Ready to add it?
Apply for a merchant account and we will get you the credentials and the docs.