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API_DeleteFunction.md

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DeleteFunction

Deletes a Lambda function. To delete a specific function version, use the Qualifier parameter. Otherwise, all versions and aliases are deleted.

To delete Lambda event source mappings that invoke a function, use DeleteEventSourceMapping. For AWS services and resources that invoke your function directly, delete the trigger in the service where you originally configured it.

Request Syntax

DELETE /2015-03-31/functions/FunctionName?Qualifier=Qualifier HTTP/1.1

URI Request Parameters

The request uses the following URI parameters.

** FunctionName ** The name of the Lambda function or version.

Name formats

  • Function name - my-function (name-only), my-function:1 (with version).
  • Function ARN - arn:aws:lambda:us-west-2:123456789012:function:my-function.
  • Partial ARN - 123456789012:function:my-function. You can append a version number or alias to any of the formats. The length constraint applies only to the full ARN. If you specify only the function name, it is limited to 64 characters in length.
    Length Constraints: Minimum length of 1. Maximum length of 140.
    Pattern: (arn:(aws[a-zA-Z-]*)?:lambda:)?([a-z]{2}(-gov)?-[a-z]+-\d{1}:)?(\d{12}:)?(function:)?([a-zA-Z0-9-_]+)(:(\$LATEST|[a-zA-Z0-9-_]+))?
    Required: Yes

** Qualifier ** Specify a version to delete. You can't delete a version that's referenced by an alias.
Length Constraints: Minimum length of 1. Maximum length of 128.
Pattern: (|[a-zA-Z0-9$_-]+)

Request Body

The request does not have a request body.

Response Syntax

HTTP/1.1 204

Response Elements

If the action is successful, the service sends back an HTTP 204 response with an empty HTTP body.

Errors

** InvalidParameterValueException **
One of the parameters in the request is invalid.
HTTP Status Code: 400

** ResourceConflictException **
The resource already exists, or another operation is in progress.
HTTP Status Code: 409

** ResourceNotFoundException **
The resource specified in the request does not exist.
HTTP Status Code: 404

** ServiceException **
The AWS Lambda service encountered an internal error.
HTTP Status Code: 500

** TooManyRequestsException **
The request throughput limit was exceeded.
HTTP Status Code: 429

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: