> ## Documentation Index > Fetch the complete documentation index at: https://docs.pagos.ai/llms.txt > Use this file to discover all available pages before exploring further. # Network Tokenization API Error Handling If the Network Tokenization API fails, you'll receive an error in the format of the following example: ```json theme={null} { "errorDetails": { "reason": "CardEligibilityError", "message": "This card is not eligible for network tokenization." } } ``` ## HTTP Response Codes What endpoint you call determines the types of HTTP response codes you can potentially receive. This table outlines the types of errors you can receive: | Endpoint | HTTP Response Codes | | :-------------------------------------------------- | :-------------------------------- | | [/tokenize](network-tokenization/endpoint/tokenize) | 201, 400, 401, 429, 500, 503 | | [/transact](network-tokenization/endpoint/transact) | 200, 401, 404, 429, 500, 503 | | [/status](network-tokenization/endpoint/status) | 200, 401, 404, 429, 500, 503 | | [/account](network-tokenization/endpoint/account) | 200, 401, 404, 429, 500, 503 | | [/resume](network-tokenization/endpoint/resumes) | 200, 400, 401, 404, 429, 500, 503 | | [/suspend](network-tokenization/endpoint/suspends) | 200, 400, 401, 404, 429, 500, 503 | | [/delete](network-tokenization/endpoint/deletes) | 200, 400, 401, 404, 429, 500, 503 | ## API Error Details | HTTP Response Code | `errorDetails` reason | `errorDetails` message | Recommended Action | | :----------------- | :------------------------------ | :------------------------------------------------------------------------------------------------------- | :-------------------------------------------------------------------------------------------------------------- | | 400 | `InvalidProperty` | `A property validation check has failed.` | Re-submit your request after correcting the input | | 400 | `InvalidInput` | `The tokenization service could not find data linked with provided input.` | Check your Token Reference Id or Asset UUID; if you can't identify an issue, contact your Pagos account manager | | 400 | `InvalidRequest` | `The tokenization service could not validate the request.` | Review the error JSON object for more details | | 400 | `UnavailableMerchantAccount` | `The merchant account is not available.` | Contact your Pagos account manager | | 400 | `CardEligibilityError` | `The card is not eligible for network tokenization.` | No further action required | | 400 | `InvalidPanReferenceFormat` | `The PAN reference format is invalid.` | Contact your Pagos account manager | | 400 | `InvalidPanReference` | `The requested PAN could not be found.` | Contact your Pagos account manager | | 400 | `InvalidTokenReferenceFormat` | `The token reference format is invalid.` | Re-submit your request after correcting the input | | 400 | `InvalidMerchantStatus` | `The merchant account is in an invalid status for the requested operation.` | Contact your Pagos account manager | | 400 | `NoActiveTokens` | `There are no active (not suspended) Tokens for the given Account PAN and consumer account.` | Re-tokenize the PAN | | 400 | `InvalidAssetReference` | `The requested asset could not be found.` | Re-submit your request after correcting the input | | 400 | `InvalidUuidFormat` | `The Uuid format is invalid.` | Re-submit your request after correcting the input | | 400 | `InvalidPanFormat` | `The PAN format is invalid, or other data associated with the PAN was incorrect or entered incorrectly.` | Re-submit your request after correcting the input | | 400 | `InvalidPan` | `The PAN is invalid.` | Re-submit your request after correcting the input | | 400 | `InvalidTrid` | `The TRID is invalid.` | Contact your Pagos account manager | | 400 | `InvalidTridNetwork` | `The TRID network is invalid.` | Contact your Pagos account manager | | 400 | `InvalidPanNetwork` | `The PAN network is invalid.` | Contact your Pagos account manager | | 400 | `InvalidPanExpiryFormat` | `The PAN expiry format is invalid.` | Re-submit your request after correcting the input | | 400 | `InvalidPanExpiry` | `The PAN expiry is invalid.` | Re-submit your request after correcting the input | | 400 | `InvalidTokenStatus` | `The current token's status doesn't support the requested operation.` | Call [/status](network-tokenization/endpoint/status) to get Token’s current status | | 400 | `ProvisionDataExpired` | `The PAN information provided is considered stale.` | No further action required | | 400 | `CardVerificationFailed` | `Invalid payment instrument or data associated with the payment instrument.` | No further action required | | 400 | `CardNotEligible` | `This card cannot be used for tokenization at this moment.` | No further action required | | 400 | `CardNotAllowed` | `The requested action is not allowed for a given PAN.` | No further action required | | 400 | `CardDeclined` | `This card is considered not eligible for tokenization at this time.` | No further action required | | 400 | `CardExpired` | `Card expired.` | No further action required | | 400 | `CardCancelled` | `Card is cancelled.` | No further action required | | 400 | `CardMarketNotSupported` | `The market of the Card provided is not supported.` | No further action required | | 400 | `CardCannotBeTokenized` | `The Card is ineligible for tokenization due to an ongoing issue such as fraud.` | No further action required | | 400 | `UnauthorizedOperation` | `The Token Reference ID cannot have its status changed as the token has been deleted.` | No further action required | | 400 | `IssuerNotSupported` | `The Issuer of the Card provided does not support provisioning for cards they issue.` | No further action required | | 400 | `ProvisionNotAllowed` | `Further operations for this card are no longer allowed.` | No further action required | | 400 | `UserLockedOutFromProvisioning` | `User is locked out from provisioning.` | Contact your Pagos account manager | | 400 | `DuplicateRequest` | `The PAN has already been provisioned to the device or the same request is currently being processed.` | No further action required | | 401 | `AuthenticationFailed` | `The tokenization service could not authenticate the request.` | Re-submit your request with correct credentials | | 404 | `InvalidTokenReference` | `The requested token could not be found.` | Contact your Pagos account manager if the problem persists | | 404 | `MetadataNotAvailable` | `The requested token's metadata is not available.` | Re-submit your request with a valid Token Reference ID | | 404 | `AccountNotFound` | `Account not found.` | Contact your Pagos account manager | | 404 | `BatchJobNotFound` | `Batch job was not found.` | Re-submit your request with a valid Batch job ID | | 429 | `concurrentLimitExceeded` | `You exceeded the maximum allowed concurrent API calls.` | Keep concurrent API calls within the allowed Concurrent API Request Limits | | 500 | `SystemError` | `A system error occurred.` | Contact your Pagos account manager | | 503 | `NetworkError` | `The network cannot process the request.` | Re-submit your request later; contact Pagos if the problem persists |