Use this consolidated error code index to navigate HTTP, AWS, Azure, and GCP failures from a single technical library. Each entry links to source-backed diagnosis, root-cause patterns, and production-focused remediation steps. Start broad, then drill into provider pages, operational categories, compare guides, or incident playbooks.
48 error codes available
81 error codes available
43 error codes available
20 error codes available
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HTTP 508 Loop Detected means the server found an infinite loop while processing recursive or depth-based operations.
HTTP 510 Not Extended is an obsolete status code from an experimental extension model and should not be emitted by modern HTTP APIs.
HTTP 511 Network Authentication Required means the client must authenticate to gain network access, often through a captive portal.
AWS AccessDenied means authorization failed for the requested action and resource. In S3 this is typically HTTP 403, while some AWS Query APIs return an AccessD...
AWS InvalidParameterValue (Invalid Parameter Value) means an invalid or out-of-range value was supplied for an input parameter. In AWS APIs, this error returns...
AWS BucketAlreadyExists (Bucket Already Exists) means the requested bucket name is not available because bucket names are globally shared. In Amazon S3, this er...
AWS NoSuchBucket (No Such Bucket) means the specified bucket does not exist. In Amazon S3, this error returns HTTP 404.
AWS NoSuchKey (No Such Key) means the specified object key does not exist in the target bucket. In Amazon S3, this error returns HTTP 404.
AWS InvalidAccessKeyId (Invalid Access Key Id) means the AWS access key ID in the request does not exist in AWS records. In Amazon S3, this error returns HTTP 4...
AWS SignatureDoesNotMatch (Signature Does Not Match) means AWS recalculated the SigV4 signature and it does not match the signature in the request. In Amazon S3...
AWS ThrottlingException means the service rejected request rate or concurrency beyond allowed limits. Depending on service and protocol, this commonly returns H...
AWS ResourceNotFoundException (Resource Not Found Exception) means the target resource for that service operation cannot be found in the active request scope. M...
AWS InvalidParameter means one or more request parameters fail service validation for the target operation. Most services return this family as HTTP 400.
AWS LimitExceededException means the operation would violate a configured service limit (for example resource count, rule size, or operation concurrency). Many...
AWS InsufficientCapacityException means the service currently lacks enough backend capacity to satisfy the request. In services such as AWS Network Firewall, th...