Test mode lets you build and test your integration without moving real money. You can use test
cards to make any step of a payment succeed or fail on purpose.

Enabling test mode

Set "testmode": true when you create a payment:

{
  "amount": 500,
  "currency": "DKK",
  "order_id": "test-1234",
  "testmode": true
}

The same field is available when you create payouts and subscriptions.

In test mode:

Card payments are handled by our test acquirer. Only the test cards on this page work, and
no real card is charged.
Other payment methods, such as MobilePay or Klarna, use the payment provider's own test
environment. The method must be set up on your account.

Test cards

Use any of these cards to get started:

Card number	Result	Card
`4000112401172221`	Succeeds	Visa debit, consumer, Canada
`5500120801422221`	Succeeds	Mastercard credit, consumer, Denmark
`4242120802091112`	Authorization fails	Visa credit, consumer, Denmark
`4000253302611113`	Capture fails	Visa debit, business, Aruba
`5500113602321114`	Cancel fails	Mastercard credit, consumer, Cayman Islands
`5100116202241115`	Refund fails	Mastercard debit, consumer, Christmas Island
`4242137200491116`	Payout and saving the card fail	Visa credit, consumer, Ireland
`4242120800091072`	Asks for 3-D Secure, then succeeds	Visa credit, consumer, Denmark

For every test card:

Expiry date: any date in the future, up to 20 years ahead.
CVC: any 3 or 4 digits.

Building your own test card

Every test card has 16 digits, made up of five parts:

Digits	Part	Meaning
1–4	Card type	Brand and whether the card is credit or debit. See Card types.
5	Segment	`2` is a business card. Any other digit is a consumer card.
6–8	Country	The card's country as an ISO 3166-1 numeric code, for example `208` for Denmark.
9–12	Free	Any 4 digits.
13–16	Result	Makes a step fail on purpose. See Results.

The full number must also pass the Luhn check.
Change one of the free digits until it does.

Card types

First 4 digits	Brand	Funding
`4242`	Visa	Credit
`4000`	Visa	Debit
`5500`	Mastercard	Credit
`5100`	Mastercard	Debit
`5019`	Dankort	Debit

Results

Last 4 digits	Result
`1112`	Authorization fails.
`1113`	Capture fails.
`1114`	Cancel fails.
`1115`	Refund fails.
`1116`	Payouts to the card fail, and the card cannot be saved for later payments or subscriptions. A one-off payment succeeds.
`1072`	The cardholder is asked to complete 3-D Secure. The payment then succeeds.
Anything else	Every step succeeds.