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Overview

To ensure your integration with Moment APIs functions correctly, you can simulate payment flows during development. This allows you to test various scenarios without any real money movement.

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Testing Cards

When testing card payments, always use test API keys. Only use the specified test cards listed below. Do not use real card information under any circumstances.
Note: The 3DS challenge page will not be displayed during testing, as the flow is being simulated to mimic a frictionless authentication experience.

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Supported card test scenarios

✅ Success scenarios
Test Card NumberCVCDateDescription
4242 4242 4242 4242Any 3 digitAny future dateValid Test Visa card
5555 5555 5555 4444Any 3 digitAny future dateValid Test Master card
❌ Error scenarios
Test Card NumberError CodeDecline CodeDescription
5555 5568 7936 0005card_declineddo_not_honorThe card was declined by the issuer for unknown reason.
5555 5515 3049 0051card_declinedinsufficient_fundsThe card does not have sufficient funds to complete the transaction.
5555 5553 1674 0043card_declinedstolen_cardThe card was reported stolen.
xxxx xxxx xxxx xxxxinvalid_test_cardN/AThe card used is not a test card.

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Testing APM payment methods

Success and failure scenarios for APM (Alternative Payment Methods) payments can be simulated by initiating a payment with a specific amount. The amount should be specified in minor units.

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Supported APM test scenarios

✅ Success scenarios
Test AmountWebhook Fired
100001Yes
❌ Error scenarios
Test AmountWebhook FiredError Code
100002Yesinsufficient_funds
xxxxxxNoinvalid_test_amount

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Webhook Responses

  1. Payment Session Update - When testing through the Payment Session API, an update will be triggered and delivered to your configured webhook endpoint via the payment_session_updated event.