5G Http - Protocol Error Or Application Error Codes

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Name	Http Status Code	Description
INVALID_API	400	The HTTP request contains an unsupported API name or API version in the URI.
INVALID_MSG_FORMAT	400	The HTTP request has an invalid format.
INVALID_QUERY_PARAM	400	The HTTP request contains an unsupported query parameter in the URI.
MANDATORY_IE_INCORRECT	400	A mandatory IE or conditional IE in data structure, but mandatory required, for an HTTP method was received with a semantically incorrect value. (NOTE 1)
MANDATORY_IE_MISSING	400	IE which is defined as mandatory or as conditional in data structure, but mandatory required, for an HTTP method is not included in the payload body of the request. (NOTE 1)
UNSPECIFIED_MSG_FAILURE	400	The request is rejected due to unspecified client error. (NOTE 2)
MODIFICATION_NOT_ALLOWED	403	The request is rejected because the contained modification instructions attempt to modify IE which is not allowed to be modified.
SUBSCRIPTION_NOT_FOUND	404	The request for modification or deletion of subscription is rejected because the subscription is not found in the NF.
RESOURCE_URI_STRUCTURE_NOT_FOUND	404	The request is rejected because a fixed part after the first variable part of an "apiSpecificResourceUriPart" (as defined in subclause 4.4.1 of 3GPP TS 29.501 [5]) is not found in the NF.
INCORRECT_LENGTH	411	The request is rejected due to incorrect value of a Content-length header field.
NF_CONGESTION_RISK	429	The request is rejected due to excessive traffic which, if continued over time, may lead to (or may increase) an overload situation.
INSUFFICIENT_RESOURCES	500	The request is rejected due to insufficient resources.
UNSPECIFIED_NF_FAILURE	500	The request is rejected due to unspecified reason at the NF. (NOTE 3)
SYSTEM_FAILURE	500	The request is rejected due to generic error condition in the NF.
NF_CONGESTION	503	The NF experiences congestion and performs overload control, which does not allow the request to be processed. (NOTE 4)