generated: '2026-07-20'
method: searched
source: https://docs.processout.com/docs/testing-in-the-sandbox
description: 'ProcessOut sandbox: a mock testing environment fully separated from production. Enabled by using sandbox project keys; every main object carries a sandbox:true attribute when created in the
  sandbox.'
environments:
  separation: Production and sandbox are fully separate; objects created in one are not visible in the other.
  key_prefixes:
    sandbox_project_id: test-proj_...
    sandbox_secret_key: key_sandbox_... (also shown as key_test_...)
    production_project_id: proj_... (remove the test- prefix)
    production_secret_key: key_live_...
  auth: 'HTTP Basic: project ID as username, secret key as password.'
  base_url: https://api.processout.com
  notes: Sandbox does not validate expiry date or CVC of test cards. Genuine card numbers never work in sandbox; test numbers never work in production.
example_customer_id: cust_LvjCcLOVe6iWn2aeCNhNmK7RbbG6K8XF
test_cards:
- number: '4242424242424242'
  behavior: VISA
- number: '5555555555554444'
  behavior: Mastercard
- number: '378282246310005'
  behavior: American Express
- number: '30123456789019'
  behavior: Diners Club
- number: '3530111333300000'
  behavior: JCB
- number: '6011111111111117'
  behavior: Discover
- number: '4977830000000001'
  behavior: FR
- number: '4360000001000005'
  behavior: FR (carte-bancaire)
- number: '5130290000000009'
  behavior: FR (Mastercard/carte-bancaire)
- number: '4658580000000008'
  behavior: GB
- number: '4571730000000003'
  behavior: DK
- number: '4023600000000002'
  behavior: IT
- number: '4338300000000009'
  behavior: AR
- number: '4835910000000003'
  behavior: CN
- number: '4000000000000101'
  behavior: 3-D Secure supported and required on the card
- number: '4000000000000119'
  behavior: 3-D Secure not supported on the card
- number: '4000000000000259'
  behavior: 3-D Secure v2 supported but v1 not supported
- number: '4000000000003238'
  behavior: 3-D Secure v2 not supported but v1 supported
- number: '4000000000003055'
  behavior: 3-D Secure v2 supported with frictionless (no fingerprint)
- number: '4000000000003063'
  behavior: 3-D Secure v2 supported with frictionless (with fingerprint)
- number: '4000000000003220'
  behavior: 3-D Secure v2 supported with fingerprint failing
- number: '4000000000003253'
  behavior: 3-D Secure v2 required for SCA, no authentication when Merchant Initiated Transaction
- number: '4000000000003246'
  behavior: 3-D Secure v1 required but v2 not supported
- number: '4000000000002180'
  behavior: The authorization on the card will fail with error code `card.do-not-honor`
- number: '4000000000002198'
  behavior: The authorization on the card will fail with error code `card.possible-fraud`
- number: '4000000000002206'
  behavior: The authorization on the card will fail with error code `card.no-money`
- number: '4000000000002214'
  behavior: The authorization on the card will fail with error code `card.expired`
- number: '4000000000002222'
  behavior: The authorization on the card will fail with error code `card.stolen`
- number: '4000000000002230'
  behavior: The authorization on the card will fail with error code `card.failed-cvc`
- number: '4000000000002248'
  behavior: The authorization on the card will fail with error code `card.failed-avs`
- number: '4000000000002255'
  behavior: The authorization on the card will fail with error code `card.not-authorized`
- number: '4000000000002263'
  behavior: The authorization on the card will fail with error code `card.inactive`
- number: '4000000000002271'
  behavior: The authorization on the card will fail with error code `card.lost`
- number: '4000000000002289'
  behavior: The authorization on the card will fail with error code `card.region-not-authorized`
- number: '4127969420587632'
  behavior: The authorization on the card will fail with error code `card.blacklisted`
- number: '4000000000000002'
  behavior: The credit card will be denied
- number: '4000000000000010'
  behavior: The authorization on the card will be successful, but any capture will fail
- number: '4000000000000028'
  behavior: The CVC check will fail
- number: '4000000000000036'
  behavior: The AVS check will fail
- number: '4000000000000044'
  behavior: The CVC and AVS checks will both fail
- number: '4000000000000069'
  behavior: The payment will be successful, but a chargeback will be initiated as soon as the payment completes
- number: '4000000000000077'
  behavior: The payment will be successful, but refunds will be declined
- number: '4000000000000085'
  behavior: The authorization will be successful, but an AVS Postal check will fail
- number: '4000000000000093'
  behavior: The authorization will be successful, but an AVS Street check will fail
- number: '4000000000000200'
  behavior: The payment will be successful, but a failed chargeback will be initiated as soon as the payment completes
- number: '4000000000000309'
  behavior: The payment will be successful, but a retrieval request will be initiated as soon as the payment completes
- number: '4000000000001216'
  behavior: The card will succeed on a verification but fail on a transaction
- number: '4000000000004004'
  behavior: The payment will be successful, but a fraud notification will be sent
- number: '4000000000006223'
  behavior: The payment will be successful, but any incremental capture will result in a failure
- number: '4000000000000531'
  behavior: The authorization will be successful but any incremental authorization will fail
- number: '4000000000003303'
  behavior: The authorization will be successful but any incremental authorization will fail with error `card.no-money`
- number: '4000000000006009'
  behavior: The authorization on the card will fail with error code `card.no-money` in **subsequent** requests. For example, if you perform a card verification, this will be successful, but any new authorizations
    after that will fail.
- number: '4000000000004301'
  behavior: The authorization on the card will fail with error code `card.expired` in **subsequent** requests. For example, if you perform a card verification, this will be successful, but any new authorizations
    after that will fail.
- number: '5337480000007168'
  behavior: The transaction will fail with a recommandation code set do `do-not-retry`.