> ## Documentation Index > Fetch the complete documentation index at: https://docs.auxpay.net/llms.txt > Use this file to discover all available pages before exploring further. # Error Codes & Test Cards > Reference for transaction error codes and test card details The AuxVault API uses standard HTTP status codes to indicate the success or failure of a request. In addition to the HTTP code, the response body will often contain a more specific `Response Code` with details about the transaction status. ## API Response Codes | Status Code | Meaning | Description | | :---------- | :------------------------ | :----------------------------------------------------------------------- | | `200` | **OK** | The request was successful. | | `400` | **Bad Request** | The request was malformed, such as having missing or invalid parameters. | | `401` | **Unauthorized** | The request is missing a valid API key. | | `403` | **Forbidden** | You do not have permission to access this resource. | | `404` | **Not Found** | The requested resource could not be found. | | `500` | **Internal Server Error** | An unexpected error occurred on our servers. | ## Transaction Error Codes | Response Code | Definition | Description | | ------------- | ---------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------- | | 0 | Unknown, please contact support for more information | | | 99 | Pending payment | Used in redirect processors prior to payment being received | | 100 | Approved | Transaction was successfully approved | | 110 | Partial approval | Transaction was successfully approved, but for a lesser amount | | 101 | Approved, pending customer approval | Transaction is pending customer approval before release | | 200 | Decline | Generic decline with no additional information provided by the issuer | | 201 | Do not honor | Generic decline with no additional information provided by the issuer | | 202 | Insufficient funds | Declined for insufficient funds | | 203 | Exceeds withdrawn limit | Declined for exceeding a withdrawn limit set by the issuer | | 204 | Invalid Transaction | Declined as the issuer does not recognize the transaction | | 205 | SCA Decline | Soft Decline indicating that a SCA challenge is required | | 220 | Invalid Amount | Provided amount is not supported by the issuer | | 221 | No such Issuer | The issuing bank can not be found | | 222 | No credit Acct | Invalid credit card number | | 223 | Expired Card | Credit card as expired and can not be processed | | 225 | Invalid CVC | Invalid CVC or CVV2 value has been provided | | 226 | Cannot Verify Pin | Card requires PIN | | 240 | Refer to issuer | Generic decline by the issuing bank | | 250 | Pick up card (no fraud) | Decline where issuer is requesting the merchant hold the card | | 251 | Lost card, pick up (fraud account) | Decline where issuer is requesting the merchant hold the card | | 252 | Stolen card, pick up (fraud account) | Decline where issuer is requesting the merchant hold the card | | 253 | Pick up card, special condition | Decline where issuer is requesting the merchant hold the card | | 261 | Stop recurring | Decline requesting recurring be stopped | | 262 | Stop recurring | Decline requesting recurring be stopped | | 300 | Gateway Decline | Generic Platform decline | | 301 | Gateway Decline - Duplicate Transaction | The gateway detected this as a duplicate transaction. Order ID, payment type, amount and payment method are used to detect duplicate transactions | | 310 | Gateway Decline - Rule Engine | Platform has declined based on a fraud rule | | 320 | Gateway Decline - Chargeback | The transaction was declined because the previous transaction was charged back | | 321 | Gateway Decline - Stop Fraud | The transaction was declined because the customer record has been flagged as "stop\_fraud" | | 322 | Gateway Decline - Closed Contact | The transaction was declined because the customer record has been flagged as "closed\_contact" | | 323 | Gateway Decline - Stop Recurring | The transaction was declined because the customer record has been flagged as "stop\_recurring" | | 400 | Transaction error returned by processor | Generic error returned from the processor | | 410 | Invalid merchant configuration | Configuration error returned from the processor | | 421 | Communication error with processor | Processor is unreachable | | 430 | Duplicate transaction at processor | Processor is seeing this as a duplicate transaction | | 440 | Processor Format error | Processor has indicated that there is a formating error | ## Test Card Details ### Card Numbers | Card Number | Card Brand | Card Type | | ---------------- | ---------- | --------- | | 4111111111111111 | visa | debit | | 4005519200000004 | visa | credit | | 4009348888881881 | visa | credit | | 4012000033330026 | visa | credit | | 4012000077777777 | visa | credit | | 4012888888881881 | visa | credit | | 4217651111111119 | visa | debit | | 4500600000000061 | visa | credit | | 5555555555554444 | mastercard | debit | | 2223000048400011 | mastercard | credit | | 378282246310005 | amex | credit | | 371449635398431 | amex | credit | | 6011111111111117 | discover | credit | | 36259600000004 | diners | credit | | 3530111333300000 | jcb | credit | ### Card Triggers | Card Number | Response | | ---------------- | --------------------------------------------------------------- | | 4000000000000002 | Decline | | 4000000000009995 | Insufficient Funds | | 4000000000009987 | Lost Card | | 4000000000009979 | Stolen Card | | 4000000000000069 | Expired Card | | 4000000000000051 | Partial approval, half of the requested amount will be approved | ### CVV Triggers | CVV | CID | Response | | --------------- | --------------- | ------------------------------- | | 200 | 2000 | N (does not match) | | 201 | 2011 | U (not verified) | | 301 | 3011 | S (issuer does not participate) | | no value passed | no value passed | I (not provided) | | any other value | any other value | M (matches) |