Our AWS error library covers high-impact exceptions across S3, IAM, EC2, Lambda, and DynamoDB with service-specific diagnostics. Each entry is written for incident workflows using RequestId and HostId evidence, policy scope checks, and quota or regional constraint analysis.
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AWS InvalidParameter means one or more request parameters fail service validation for the target operation. Most services return this family as HTTP 400.
AWS InvalidParameterCombination means parameters that must not be used together were used together, or a required companion parameter is missing.
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 HTTP 400.
AWS InvalidParameterValueException means one of the parameters in the Lambda Invoke request is not valid (HTTP 400).
AWS S3 InvalidRange (HTTP 416) occurs when a GetObject request includes a Range header that exceeds the actual byte size of the object. It indicates the requested offset or length is out of bounds.
AWS InvalidRequest (Invalid Request) means the request is not valid for the selected S3 operation, endpoint mode, or signature configuration. In Amazon S3, this error returns HTTP 400.
AWS InvalidRequestContentException means the Lambda invoke request body cannot be parsed as JSON, or a request header value is invalid (HTTP 400).
AWS InvalidSignatureException indicates that the request signature is structurally malformed. It occurs when the Authorization header is missing required components, uses an incorrect signing algorithm, or fails to follow the strict Signature Version 4 (SigV4) format.
AWS InvalidSnapshot.NotFound means the specified EBS snapshot does not exist for the account and region context of the request.
AWS InvalidStorageClass means the requested Amazon S3 storage class value is not valid for that operation or context (HTTP 400).
Amazon EC2 returns `InvalidSubnetID.NotFound` when the requested subnet ID cannot be found in the account-region context for the operation.
AWS InvalidUserID.Malformed means owner or executableBy identifiers in EC2 describe requests are invalid. In Amazon EC2, this error returns HTTP 400.
AWS InvalidViewerCertificate (Cloud Front Invalid Viewer Certificate) means the viewer certificate settings are invalid. In the CloudFront API, this error returns HTTP 400.
AWS ItemCollectionSizeLimitExceededException means a DynamoDB item collection exceeded the 10 GB limit for a local secondary index partition key (HTTP 400).
AWS LimitExceeded means the IAM request exceeds current account limits for identity objects or attachment dimensions (HTTP 409).