Testing Fallbacks
To test fallbacks, you need:
Using one of Primer’s test cards for generic decline and fail authorizations above, the authorization request will decline or fail (depending on the card used) and trigger a fallback. The fallback authorization request should then be sent and be authorized.
Set Braintree as the primary processor and configure your fallback processor.
Then, create a test payment with the amount set to 3000.00-3000.99 and use any test card from your fallback processor that will result in an authorized payment.
The authorization will decline and trigger a fallback. The fallback request should then be sent and be authorized.
Set Worldpay as the primary processor and configure your fallback processor.
Then, create a test payment with the cardholder name set to “ERROR” and use any test card from your fallback processor that will result in an authorized payment.
The authorization will decline and trigger a fallback. The fallback request should then be sent and be authorized.
Set Stripe as the primary processor and configure your fallback processor.
Then, create a test payment with the card number 
- a test card that will decline or fail with your primary processor under one of the conditions outlined above
- a fallback processor that will authorize the payment based on the test card used to decline or fail with the first processor
Example fallback configuration
If the fallback processor doesn’t accept the test card, the payment will be declined and you’ll see both authorization requests declined in the payment details page.
Primer test processor
In sandbox, set the Primer test processor as the primary processor and an alternative processor as the fallback processor, such as Braintree, Stripe or Worldpay. Failed and declined authorization Use the following test cards to simulate a failed or declined authorization. Use any 3-digit CVV and future expiry date to trigger the test scenario.| Scenario | Card Network | Card Number |
|---|---|---|
| Generic decline | Visa | 4000 0000 0000 0002 |
| Generic decline | Mastercard | 5100 0000 0000 0008 |
| Generic fail | Visa | 4000 0000 0000 0010 |
| Generic fail | Mastercard | 5100 0000 0000 0016 |
Example test fallback with Primer test processor
Other sandbox processors
It’s possible to test fallbacks without using the Primer test processor. You will need to review the testing guides for your processors and ensure:- you can decline or fail a payment with your primary processor for the conditions outlined above
- the test card or test scenario can lead to a successful authorization request with your fallback processor
Braintree
Braintree enable authorization responses to be determined by the authorization amount. You can test fallbacks using Braintree as your primary processor.If the amount is set to 3000.00-3000.99, then this will trigger a fallback.
You can test fallbacks with 3DS using Braintree as your primary processor as the authorization response is determined by the amount, not the test card. You will also need a fallback processor, such as the Primer test processor, that will accept Primer’s 3DS test card which is required to trigger 3DS in sandbox.
Example test fallback with 3DS
Worldpay
Worldpay enable authorization responses to be determined by the cardholder name. You can test fallbacks using Worldpay as your primary processor.If the cardholder name is set to “ERROR”, then this will trigger a fallback.
You can test fallbacks with 3DS using Worldpay as your primary processor as the authorization response is determined by the cardholder name, not the test card. You will also need a fallback processor, such as the Primer test processor, that will accept Primer’s 3DS test card which is required to trigger 3DS in sandbox.
Example test fallback with 3DS using Worldpay as primary processor and Nuvei as fallback processor
Stripe
Stripe enable authorization responses to be determined by the card number. You can test fallbacks using Stripe as your primary processor.If the card number is set to
4000000000000119, then this will trigger a fallback.4000000000000119 and ensure this card will result in an authorized payment with your fallback processor.
The authorization will decline and trigger a fallback. The fallback request should then be sent and be authorized.
Example test fallback with 3DS using Worldpay as primary processor and Nuvei as fallback processor
You can’t test fallbacks with 3DS using Stripe as your primary processor as the authorization response is determined by the card number. This clashes with Primer’s 3DS test card which is required to trigger 3DS in sandbox.