D HTTP Error Codes Supported by Policy

HTTP Error Codes supported by Policy for AM, SM, and UE Interfaces

Table D-1 HTTP Error codes and cause supported by Policy for AM, SM, and UE Interfaces for Notification

Error Code Message Cause Code Description Action
400 Bad requests INVALID_MSG_FORMAT Tthe HTTP request has an invalid format.
  • POST retry with POST request
  • If retry is exhausted, then terminate the transaction.
MANDATORY_IE_INCORRECT A mandatory IE for an HTTP method received a semantically incorrect request.
MANDATORY_IE_MISSING A mandatory IE for an HTTP method is not included in the request.
UNSPECIFIED_MSG_FAILURE The request is rejected due to unspecified client error.
ERROR_REQUEST_PARAMETERS The HTTP request is rejected because the set of information needed by the PCF for UE Policy selection is incomplete for the decision to be made.
401 Unauthorized With header "WWW-Authenticate" There will be a new function to enable retry for this error code.
  • POST retry with POST request
  • If retry is exhausted, terminate the transaction
403 Forbidden MODIFICATION_NOT_ALLOWED The request is rejected because modification is not allowed.
  • POST retry with POST request
  • If retry is exhausted, terminate the transaction
404 Not Found SUBSCRIPTION_NOT_FOUND The request for modification or deletion of subscription is rejected because the subscription is not found in the NF.
  • POST retry with POST request
  • If retry is exhausted, delete the session
RESOURCE_URI_STRUCTURE_NOT_FOUND The request is rejected because a fixed part after the first variable part of an "apiSpecificResourceUriPart" is not found in the NF.
  • POST retry with POST request
  • If retry is exhausted, delete the session
405 Method Not Allowed NA If the NF supports the HTTP method for several resources in the API, but not for the target resource of a given HTTP request
  • POST retry with POST request
  • If retry is exhausted, terminate the transaction
406 Not Acceptable NA The server cannot generate a response in a format specified as acceptable by the client in the "Accept" headers.
408 Request Timeout NA The server did not receive a complete request from the client within the expected timeframe.
409 Conflict NA The server did not receive a complete request from the client within the expected timeframe.
410 Gone NA The server did not receive a complete request from the client within the expected timeframe.
411 Length Required INCORRECT_LENGTH The request is rejected due to incorrect valueof a Content-length header field.
412 Precondition Failed NA One or more preconditions specified in the request headers were not met.
413 Payload Too Large NA The server refuses to process the request because thepayload size exceeds its limitations.
414 URI Too Long NA The server cannot process the request because the provided URI exceeds its maximum length limit.
415 Unsupported Media Type NA The server cannot process the request due to an unsupported media type in the request payload.
429 Too Many Requests NF_CONGESTION_RISK The request is rejected due to excessive traffic which, if continued over time, may lead to (or may increase) an overload situation.
500   INSUFFICIENT_RESOURCES The request is rejected due to insufficient resources.
UNSPECIFIED_NF_FAILURE The request is rejected due to unspecified reason at the NF.
SYSTEM_FAILURE The request is rejected due to generic error condition in the NF.
NF_FAILOVER The request is rejected due to generic error condition in the NF.
503   NF_CONGESTION The NF experiences congestion and performs overload control, which does not allow the request to be processed.

Policy as a producer of Error to AM Interface

Table D-2 Policy as a producer of Error to AM Interface

Error Code Message Cause Code Scenario
400 Bad request MANDATORY_IE_INCORRECT When the SUPI was incorrectly written into the request body and sent to Ingress.
MANDATORY_IE_MISSING When a request is sent without a mandatory IE (SUPI) in the request body.
UNSPECIFIED_MSG_FAILURE When there is malformed JSON object.
USER_UNKNOWN A correct request is sent with a SUPI that is not registered in the UDR. The validate-user in the CNC Console of the UE Policy is activated.
ERROR_REQUEST_PARAMETERS When there is malformed JSON object.
PENDING_TRANSACTION In case of Pending transaction.
401 Unauthorized With header "WWW-Authenticate" Supported by Gateway service.
403 Forbidden MODIFICATION_NOT_ALLOWED Supported by Gateway service.
404 Not Found SUBSCRIPTION_NOT_FOUND When UE-Delete is sent with a polAssoId that does not exist in the database.
RESOURCE_URI_STRUCTURE_NOT_FOUND When resource URI structure is not found.
408 Request Timeout NA Supported by Gateway service.
411 Length Required INCORRECT_LENGTH Incorrect length.
429 Too Many Requests NF_CONGESTION_RISK When there is congestion risk in the NF.
500 Internal Server Error UNSPECIFIED_NF_FAILURE When an unexpected error occurs within the service.
503 Service Unavailable NF_CONGESTION Supported by Gateway service.

Policy as a producer of Error to SM

Table D-3 Policy as a producer of Error to SM

Error Code Message Cause Code Scenario
400 Bad request MANDATORY_IE_MISSING A request is sent without a mandatory IE (SUPI) in the request body.
UNSPECIFIED_MSG_FAILURE malformed json object.
USER_UNKNOWN A correct request is sent, with a SUPI that is not registered in the UDR.We activate the validate-user in the UE Policy GUI.
ERROR_INITIAL_PARAMETERS A request is sent with an error in one or more of its parameters
PENDING_TRANSACTION This error shall be used when the PendingTransaction feature is supported and the AMF receives an incomingrequest on a policy association while it has an ongoingtransaction on the same policy association.
401 Unauthorized With header "WWW-Authenticate" Supported by Gateway service.
403 Forbidden MODIFICATION_NOT_ALLOWED Supported by Gateway service.
POLICY_CONTEXT_DENIED When an error occurs in PRE service.
LATE_OVERLAPPING_REQUEST The request is rejected because it collides with an existing SM context or PDU session context with a more recent origination timestamp.
404 Not Found SUBSCRIPTION_NOT_FOUND When UE-Delete is sent with a polAssoId that does not exist in the database.
RESOURCE_URI_STRUCTURE_NOT_FOUND This error is being handled by IGW, never reachesthe core service, send 404 Not Found withoud cause.
408 Request Timeout NA Supported by Gateway service.
411 Length Required INCORRECT_LENGTH The error cause will be changed to ERROR_REQUEST_PARAMETERS.
429 Too Many Requests NF_CONGESTION_RISK This will be supported with IGW congestion control and load shedding profiles.
500 Internal Server Error UNSPECIFIED_NF_FAILURE The request is rejected due to unspecified reason at the NF.
503 Service Unavailable NF_CONGESTION Supported by Gateway service.

Policy as a producer of Error to UE

Table D-4 Policy as a producer of Error to UE

Error Code Message Cause Code Scenario
400 Bad request MANDATORY_IE_INCORRECT The SUPI was incorrectly written into the request body and sent to Ingress.
MANDATORY_IE_MISSING A request is sent without a mandatory IE (SUPI) in the request body,the cases that are related to this cause will be handled asERROR_REQUEST_PARAMETERS.
UNSPECIFIED_MSG_FAILURE When there is malformed JSON object.
USER_UNKNOWN A correct request is sent, with a SUPI that is not registered in the UDR.We activate the validate-user in the UE Policy GUI.
ERROR_REQUEST_PARAMETERS The HTTP request is rejected because the set ofinformation needed by the PCF for UE Policy selection isincomplete or erroneous or not available for the decision tobe made.
PENDING_TRANSACTION This error shall be used when the PendingTransactionfeature is supported and the AMF receives an incomingrequest on apolicy association while it has an ongoingtransaction on the same policy association.
401 Unauthorized With header "WWW-Authenticate" Supported by Gateway service.
403 Forbidden MODIFICATION_NOT_ALLOWED Supported by Gateway service.
404 Not Found SUBSCRIPTION_NOT_FOUND When UE-Delete is sent with a polAssoId that does not exist in the database.
RESOURCE_URI_STRUCTURE_NOT_FOUND This error is being handled by IGW, never reaches the core service, send 404 Not Found without cause.
408 Request Timeout NA Request gets timed out.
411 Length Required INCORRECT_LENGTH The error cause will be changed to ERROR_REQUEST_PARAMETERS.
429 Too Many Requests NF_CONGESTION_RISK This will be supported with IGW congestion controland load shedding profiles.
500 Internal Server Error UNSPECIFIED_NF_FAILURE The request is rejected due to unspecified reason at the NF.
503 Service Unavailable NF_CONGESTION Supported by Gateway service.

HTTP Error Codes supported by Policy for CHF and UDR Interfaces

Table D-5 Error codes and cause supported by Policy for CHF Interface

Error Code Message Cause Code Description Actions
400 Bad Request INVALID_API The HTTP request contains an unsupported API name or API version in the URI.
  • Session Retry using connector configuration with PUT and POST requests.
  • After the session retry is exhausted, final error code for PUT or POST failure will reach core service for Policy evaluation.
INVALID_MSG_FORMAT The HTTP request has an invalid format.
INVALID_QUERY_PARAM The HTTP request contains an unsupported query parameter in the URI.
MANDATORY_QUERY_PARAM_INCORRECT A mandatory query parameter, or aconditional query parameter but mandatoryrequired, for an HTTP method was received in the URI with semantically incorrect value.
OPTIONAL_QUERY_PARAM_INCORRECT A mandatory query parameter, or aconditional query parameter but mandatoryrequired, for an HTTP method was received in the URI with semantically incorrect value.
MANDATORY_QUERY_PARAM_MISSING Query parameter which is defined asmandatory, or as conditional but mandatoryrequired, for an HTTP method is not included in the URI of the request.
MANDATORY_IE_INCORRECT A mandatory IE or conditional IE butmandatory required, for an HTTP methodwas received with a semantically incorrect.
OPTIONAL_IE_INCORRECT  
MANDATORY_IE_MISSING A mandatory query parameter is missing in the HTTP request.
USER_UNKNOWN The HTTP request is rejected because PCF received an unknown user.
NO_AVAILABLE_POLICY_COUNTERS Policy counters are not available.
UNKNOWN_POLICY_COUNTERS Policy counters are unknown.
401 Unauthorized WWW-Authenticate Unauthorized with Header "WWW-Authenticate"
  • Post Retry with POST request (Session retry)
  • Put retry with POST (Revalidation/Reset context)
  • If retry is exhausted, then terminate the transaction.
403 Forbidden Modification_Not_Allowed Request is forbidden.
  • Retry with POST request
  • If retry is exhausted, delete the session
404

Not Found

 SUBSCRIPTION_NOT_FOUND The request for modification or deletion of a subscription is rejected because the subscription is not found in the NF.
  • Retry with POST request
  • If retry is exhausted, delete the session
RESOURCE_URI_STRUCTURE_NOT_FOUND Resource URI structure is not found.
  • Post Retry with POST request (Session retry)
  • Put retry with POST (Revalidation/Reset context)
  • If retry is exhausted, then terminate the transaction.
405 Method Not Allowed NA The HTTP request is rejected as the performed operation is not allowed.
  • Post Retry with POST request (Session retry)
  • Put retry with POST (Revalidation/Reset context)
  • If retry is exhausted, then terminate the transaction.
406 Not acceptable NA The request is not acceptable.
409 Conflict NA The request is rejected due to schema errors and conflicts in versions.
410 Gone NA This requested resource has been permanently deleted.
411 Length Required NA The HTTP request is rejected due to incorrect value of a Content-length header field.
412 Precondition Failed NA The request is rejected due to incorrect conditions in GET request.
413 Payload Too Large NA The payload is larger than the limit.
414 URI Too Long NA The request URI is longer than the limit.
415 Unsupported Media Type NA The HTTP request contains unsupported payload payload type.
429 Too many requests NA The request is rejected due to excessive traffic, which if continued over time, may lead to (or may increase) an overload situation.
500 Internal Server Error NA The request is rejected due to generic error condition in the NF.
501 Not Implemented NA The service operation cannot be implemented due to invalid resource URI to be monitored.
503 Service Unavailable NA The NF experiences congestion and performs overload control, which does not allow the request to be processed.
504 Gateway Timeout NA This error code is generated in case of timeout due to inactivity.

Error codes and cause supported by Policy for UDR Interface.

Error codes and cause supported by Policy for UDR Interface:

Error Code Message Cause Code Description Action
400 Bad Request INVALID_API The HTTP request contains an unsupported API name or API version in the URI.
  • Session Retry using connector configuration with PUT and POST requests.
  • If retry is exhausted, terminate the transaction.
INVALID_MSG_FORMAT The HTTP request has an invalid format.
INVALID_QUERY_PARAM The HTTP request contains an unsupported query parameter in the URI.
MANDATORY_QUERY_PARAM_INCORRECT A mandatory query parameter, or aconditional query parameter but mandatoryrequired, for an HTTP method was received in the URI with semantically incorrect value.
OPTIONAL_QUERY_PARAM_INCORRECT A mandatory query parameter, or aconditional query parameter but mandatoryrequired, for an HTTP method was received in the URI with semantically incorrect value.
MANDATORY_QUERY_PARAM_MISSING Query parameter which is defined asmandatory, or as conditional but mandatoryrequired, for an HTTP method is not included in the URI of the request.
MANDATORY_IE_INCORRECT A mandatory IE or conditional IE butmandatory required, for an HTTP methodwas received with a semantically incorrect.
OPTIONAL_IE_INCORRECT  
MANDATORY_IE_MISSING A mandatory query parameter is missing in theHTTP request.
USER_UNKNOWN The HTTP request is rejected because PCF received an unknown user.
401 Unauthorized WWW-Authenticate Unauthorized with Header "WWW-Authenticate"
  • Post Retry with POST request (Session retry)
  • Put retry with POST (Revalidation/Reset context)
  • If retry is exhausted, terminate the transaction
403 Forbidden Modification_Not_Allowed Request is forbidden. Retry with POST request
404 Not Found SUBSCRIPTION_NOT_FOUND The request for modification or deletion of a subscription is rejected because the subscription is not found in the NF.
  • POST Retry with POST request (Session retry)
  • Put retry with POST (Revalidation/Reset context)
  • If retry is exhausted, delete the subscription
RESOURCE_URI_STRUCTURE_NOT_FOUND Resource URI structure is not found.
  • Retry with POST request
  • If retry is exhausted, terminate the transaction
USER_UNKNOWN User is unknown.
  • Retry with POST request
  • If retry is exhausted, terminate the transaction
405 Method Not Allowed NA The HTTP request is rejected as the performed operation is not allowed.
  • Retry with POST request
  • If retry is exhausted, terminate the transaction
406 Not acceptable NA The request is not acceptable.
  • Retry with POST request
  • If retry is exhausted, terminate the transaction
409 Conflict NA The request is rejected due to schema errors and conflicts in versions.
410 Gone NA This requested resource has been permanently deleted.
411 Length Required NA The HTTP request is rejected due to incorrect value of a Content-length header field.
412 Precondition Failed NA The request is rejected due to incorrect conditions in GET request.
413 Payload Too Large NA The payload is larger than the limit.
414 URI Too Long NA The request URI is longer than the limit.
415 Unsupported Media Type NA The HTTP request contains unsupported payload payload type.
429 Too many requests NA The request is rejected due to excessive traffic, which if continued over time, may lead to (or may increase) an overload situation. NA
500 Internal Server Error NA The request is rejected due to generic error condition in the NF.
  • Retry with POST request
  • If retry is exhausted, terminate the transaction
501 Not Implemented NA The service operation cannot be implemented due to invalid resource URI to be monitored.
503 Service Unavailable NA The NF experiences congestion and performs overload control, which does not allow the request to be processed.
504 Gateway Timeout NA This error code is generated in case of timeout due to inactivity.

Policy as a producer of Error for Notification for CHF Interface

Table D-6 Policy as a producer of Error for Notification for CHF Interface

Error Code Message Cause Code Scenario
400 Bad Request MANDATORY_IE_MISSING When SUPI is not present in the request body for update or terminate notification.
400 Bad Request INVALID_MESSAGE_FORMAT When the request body does not adhere to update or terminate notification structure.
400 Bad Request invalid_API The HTTP request contains an unsupported API name or API version in the URI.
404 Not Found RESOURCE_URI_STRUCTURE_NOT_FOUND The notification URI is incorrect.
404 Not Found SUBSCRIPTION_NOT_FOUND When the spendinglimit resource is not found in DB.
504 Gateway Timeout GATEWAY_TIMEOUT This error code is generated in case of timeout due to inactivity.

Policy as a producer of Error for Notification for UDR Interface

Table D-7 Policy as a producer of Error for Notification for UDR Interface

Error Code Message Cause Code Scenario
400 Bad Request MANDATORY_IE_MISSING When neither SUPI nor GPSI is present in the request body for update or terminate notification.
400 Bad Request INVALID_MESSAGE_FORMAT When the request body does not adhere to update or terminate notification structure.
404 Not Found SUBSCRIPTION_NOT_FOUND When the PolicyDataChangeNotification resource is not found in DB.
501 Not Implemented UNSUPPORTED_MONITORED_URI When the PolicyDataChangeNotification received have resource other than smPolicyData,operatorSpecificData, amPolicyData, and UePolicySet.

HTTP Error Codes supported by Policy for NRF Interface

HTTP Error codes supported by Policy for NRF Interface:

Error Code Message Description Action
400 Bad Request The Request contains invalid values.

Autonomous mode: The NF retries primary NRF configurable N times, if fails NF retries secondary NRF configurable M times. NF continues switching back and forth between primary and secondary NRF until success registration. The time interval between one attempt and another is configurable.

On demand mode: NF retries non primary NRF, if Primary NRF fails. If non primary NRF fails, NF continues with call flow and shall not be able to deregister in NRF.

403 Forbidden Request is forbidden.
404 Not Found The request for modification or deletion of a subscription is rejected because the subscription is not found in the NF.
405 Method Not Allowed The request method is not GET, PUT, PATCH or DELETE.
411 Length Required The request is rejected due to incorrect value of a Content-length header field, or the header doesn't exist.
500 Internal Server Error Internal error occurred in NRF.
503 Service Unavailable Rejecting traffic for overload control.

Policy as a producer of Error for Notification for NRF Interface

Error Code Message Cause Code Scenario
400 Bad Request INVALID_MSG_FORMAT NRF terminates the notification transaction.
MANDATORY_IE_INCORRECT
OPTIONAL_IE_INCORRECT
MANDATORY_IE_MISSING
UNSPECIFIED_MSG_FAILURE
429 Too Many Requests NF_CONGESTION_RISK
500 Internal Server Error SYSTEM_FAILURE
503 Service Unavailable NA