Decline Codes

Decline codes go by processor. Below is a list of links from the processors websites:

Worldpay Decline Codes: http://support.worldpay.com/support/CNP-API/content/paytransrespcodes.htm

Nuvei Decline Codes: https://docs.nuvei.com/documentation/integration/response-handling/#gateway-decline-reasons

Adyen Decline Codes: https://docs.adyen.com/development-resources/error-codes/