Primer provides a Sandbox Processor that can be used in the Sandbox environment to make test payments and validate your integration. This processor comes with:
  • a set of test card numbers to trigger various scenarios
  • a set of mocked payment methods to create your first payments on the checkout
Keep in mind:
  • For PCI-compliance reasons, only test card numbers are allowed in Sandbox. A payment will fail if a non-test card number is used.
  • No error will be raised in production for using a test card number

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Test card payments

For test card payments, you can use the following test cards to simulate scenarios: Successful authorization
Use the following test cards to simulate a successful authorization.
Card NetworkCard NumberCVVExpiry dateAccount Funding Type
Visa4111 1111 1111 1111Any 3 digit numberAny future expiry dateDebit
Visa4242 4242 4242 4242Any 3 digit numberAny future expiry dateCredit
Mastercard5252 5252 5252 5258Any 3 digit numberAny future expiry dateDebit
Mastercard5555 5555 5555 4444Any 3 digit numberAny future expiry dateCredit
Visa / Cartes Bancaires4035 5000 0000 0000Any 3 digit numberAny future expiry date
Mastercard / Cartes Bancaires5132 0000 0000 0000Any 3 digit numberAny future expiry date
Cartes Bancaires4970 0000 0000 0008Any 3 digit numberAny future expiry date
Failed and declined authorization
Use the following test cards to simulate a failed or declined authorization.
ScenarioCard NetworkCard Number
Generic declineVisa4000 0000 0000 0002
Generic declineMastercard5100 0000 0000 0008
Generic failVisa4000 0000 0000 0010
Generic failMastercard5100 0000 0000 0016

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Test mocked payment methods

The Primer Sandbox Processor bundles a mocked version of PayPal, Sofort and Klarna. For each of these payment methods, you can trigger the desired outcome of the “Authorization” using the Drop-In Checkout.

Testing PM Cards Web UI