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.
62 error codes available
99 error codes available
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22 error codes available
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AWS RequestLimitExceeded is an account-level throttling error indicating that the total number of concurrent DynamoDB API calls (Control Plane) has reached the...
AWS InsufficientCapacityException means the service currently lacks enough backend capacity to satisfy the request. In services such as AWS Network Firewall, th...
AWS InvalidUserID.Malformed means owner or executableBy identifiers in EC2 describe requests are invalid. In Amazon EC2, this error returns HTTP 400.
AWS MalformedQueryString means a Query API request string is syntactically invalid (for example malformed encoding or missing required query structure). In AWS...
AWS RequestExpired (Request Expired) means the request reached AWS outside the allowed signature time window. In AWS APIs, this error returns HTTP 400.
AWS ServiceUnavailable (Service Unavailable) means Amazon S3 is temporarily unable to handle the request. In Amazon S3, this error returns HTTP 503.
AWS S3 SlowDown is a 503 error indicating that the request rate to a specific S3 prefix has exceeded the service internal throughput limits. It serves as a back...
AWS ValidationException (Validation Exception) means the input fails service validation constraints. In AWS APIs, this error returns HTTP 400.
AWS BucketAlreadyOwnedByYou (Bucket Already Owned By You) means the bucket already exists and is owned by your AWS account. In Amazon S3, this error returns HTT...
AWS InvalidBucketName (Invalid Bucket Name) means the specified bucket name is invalid for Amazon S3 naming rules. In Amazon S3, this error returns HTTP 400.
AWS NoSuchEntity (No Such Entity) is an IAM-specific error meaning the referenced IAM entity (user, role, group, or policy path target) does not exist. In IAM A...
AWS InvalidClientTokenId (Invalid Client Token Id) means the AWS access key ID or client token does not exist in records. In AWS APIs, this error returns HTTP 4...
AWS MissingParameter (Missing Parameter) means a required parameter for the action is not supplied. In AWS APIs, this error returns HTTP 400.
AWS ServiceQuotaExceededException means the request exceeds a configured service quota for the account/region. Depending on service, this can surface as HTTP 40...
AWS Unavailable (Unavailable) means the service is temporarily unavailable. In AWS APIs, this error returns HTTP 503.