# FunctionConfiguration


Details about a function's configuration.

## Contents


 ** Architectures **   <a name="lambda-Type-FunctionConfiguration-Architectures"></a>
The instruction set architecture that the function supports. Architecture is a string array with one of the valid values. The default architecture value is `x86_64`.  
Type: Array of strings  
Array Members: Fixed number of 1 item.  
Valid Values: `x86_64 | arm64`   
Required: No

 ** CapacityProviderConfig **   <a name="lambda-Type-FunctionConfiguration-CapacityProviderConfig"></a>
Configuration for the capacity provider that manages compute resources for Lambda functions.  
Type: [CapacityProviderConfig](API_CapacityProviderConfig.md) object  
Required: No

 ** CodeSha256 **   <a name="lambda-Type-FunctionConfiguration-CodeSha256"></a>
The SHA256 hash of the function's deployment package.  
Type: String  
Required: No

 ** CodeSize **   <a name="lambda-Type-FunctionConfiguration-CodeSize"></a>
The size of the function's deployment package, in bytes.  
Type: Long  
Required: No

 ** ConfigSha256 **   <a name="lambda-Type-FunctionConfiguration-ConfigSha256"></a>
The SHA256 hash of the function configuration.  
Type: String  
Required: No

 ** DeadLetterConfig **   <a name="lambda-Type-FunctionConfiguration-DeadLetterConfig"></a>
The function's dead letter queue.  
Type: [DeadLetterConfig](API_DeadLetterConfig.md) object  
Required: No

 ** Description **   <a name="lambda-Type-FunctionConfiguration-Description"></a>
The function's description.  
Type: String  
Length Constraints: Minimum length of 0. Maximum length of 256.  
Required: No

 ** DurableConfig **   <a name="lambda-Type-FunctionConfiguration-DurableConfig"></a>
The function's durable execution configuration settings, if the function is configured for durability.  
Type: [DurableConfig](API_DurableConfig.md) object  
Required: No

 ** Environment **   <a name="lambda-Type-FunctionConfiguration-Environment"></a>
The function's [environment variables](https://docs.aws.amazon.com/lambda/latest/dg/configuration-envvars.html). Omitted from AWS CloudTrail logs.  
Type: [EnvironmentResponse](API_EnvironmentResponse.md) object  
Required: No

 ** EphemeralStorage **   <a name="lambda-Type-FunctionConfiguration-EphemeralStorage"></a>
The size of the function's `/tmp` directory in MB. The default value is 512, but can be any whole number between 512 and 10,240 MB. For more information, see [Configuring ephemeral storage (console)](https://docs.aws.amazon.com/lambda/latest/dg/configuration-function-common.html#configuration-ephemeral-storage).  
Type: [EphemeralStorage](API_EphemeralStorage.md) object  
Required: No

 ** FileSystemConfigs **   <a name="lambda-Type-FunctionConfiguration-FileSystemConfigs"></a>
Connection settings for an [Amazon EFS file system](https://docs.aws.amazon.com/lambda/latest/dg/configuration-filesystem.html) or an [Amazon S3 Files file system](https://docs.aws.amazon.com/lambda/latest/dg/configuration-filesystem.html).  
Type: Array of [FileSystemConfig](API_FileSystemConfig.md) objects  
Array Members: Minimum number of 0 items. Maximum number of 1 item.  
Required: No

 ** FunctionArn **   <a name="lambda-Type-FunctionConfiguration-FunctionArn"></a>
The function's Amazon Resource Name (ARN).  
Type: String  
Length Constraints: Minimum length of 0. Maximum length of 10000.  
Pattern: `arn:(aws[a-zA-Z-]*)?:lambda:[a-z]{2}((-gov)|(-iso([a-z]?)))?-[a-z]+-\d{1}:\d{12}:function:[a-zA-Z0-9-_\.]+(:(\$LATEST(\.PUBLISHED)?|[a-zA-Z0-9-_]+))?`   
Required: No

 ** FunctionName **   <a name="lambda-Type-FunctionConfiguration-FunctionName"></a>
The name of the function.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 256.  
Pattern: `(arn:(aws[a-zA-Z-]*)?:lambda:)?([a-z]{2}((-gov)|(-iso([a-z]?)))?-[a-z]+-\d{1}:)?(\d{12}:)?(function:)?([a-zA-Z0-9-_\.]+)(:(\$LATEST(\.PUBLISHED)?|[a-zA-Z0-9-_]+))?`   
Required: No

 ** Handler **   <a name="lambda-Type-FunctionConfiguration-Handler"></a>
The function that Lambda calls to begin running your function.  
Type: String  
Length Constraints: Minimum length of 0. Maximum length of 128.  
Pattern: `[^\s]+`   
Required: No

 ** ImageConfigResponse **   <a name="lambda-Type-FunctionConfiguration-ImageConfigResponse"></a>
The function's image configuration values.  
Type: [ImageConfigResponse](API_ImageConfigResponse.md) object  
Required: No

 ** KMSKeyArn **   <a name="lambda-Type-FunctionConfiguration-KMSKeyArn"></a>
The ARN of the AWS Key Management Service (AWS KMS) customer managed key that's used to encrypt the following resources:  
+ The function's [environment variables](https://docs.aws.amazon.com/lambda/latest/dg/configuration-envvars.html#configuration-envvars-encryption).
+ The function's [Lambda SnapStart](https://docs.aws.amazon.com/lambda/latest/dg/snapstart-security.html) snapshots.
+ When used with `SourceKMSKeyArn`, the unzipped version of the .zip deployment package that's used for function invocations. For more information, see [ Specifying a customer managed key for Lambda](https://docs.aws.amazon.com/lambda/latest/dg/encrypt-zip-package.html#enable-zip-custom-encryption).
+ The optimized version of the container image that's used for function invocations. Note that this is not the same key that's used to protect your container image in the Amazon Elastic Container Registry (Amazon ECR). For more information, see [Function lifecycle](https://docs.aws.amazon.com/lambda/latest/dg/images-create.html#images-lifecycle).
If you don't provide a customer managed key, Lambda uses an [AWS owned key](https://docs.aws.amazon.com/kms/latest/developerguide/concepts.html#aws-owned-cmk) or an [AWS managed key](https://docs.aws.amazon.com/kms/latest/developerguide/concepts.html#aws-managed-cmk).  
Type: String  
Pattern: `(arn:(aws[a-zA-Z-]*)?:[a-z0-9-.]+:.*)|()`   
Required: No

 ** LastModified **   <a name="lambda-Type-FunctionConfiguration-LastModified"></a>
The date and time that the function was last updated, in [ISO-8601 format](https://www.w3.org/TR/NOTE-datetime) (YYYY-MM-DDThh:mm:ss.sTZD).  
Type: String  
Required: No

 ** LastUpdateStatus **   <a name="lambda-Type-FunctionConfiguration-LastUpdateStatus"></a>
The status of the last update that was performed on the function. This is first set to `Successful` after function creation completes.  
Type: String  
Valid Values: `Successful | Failed | InProgress`   
Required: No

 ** LastUpdateStatusReason **   <a name="lambda-Type-FunctionConfiguration-LastUpdateStatusReason"></a>
The reason for the last update that was performed on the function.  
Type: String  
Required: No

 ** LastUpdateStatusReasonCode **   <a name="lambda-Type-FunctionConfiguration-LastUpdateStatusReasonCode"></a>
The reason code for the last update that was performed on the function.  
Type: String  
Valid Values: `EniLimitExceeded | InsufficientRolePermissions | InvalidConfiguration | InternalError | SubnetOutOfIPAddresses | InvalidSubnet | InvalidSecurityGroup | ImageDeleted | ImageAccessDenied | InvalidImage | KMSKeyAccessDenied | KMSKeyNotFound | InvalidStateKMSKey | DisabledKMSKey | EFSIOError | EFSMountConnectivityError | EFSMountFailure | EFSMountTimeout | InvalidRuntime | InvalidZipFileException | FunctionError | VcpuLimitExceeded | CapacityProviderScalingLimitExceeded | InsufficientCapacity | EC2RequestLimitExceeded | FunctionError.InitTimeout | FunctionError.RuntimeInitError | FunctionError.ExtensionInitError | FunctionError.InvalidEntryPoint | FunctionError.InvalidWorkingDirectory | FunctionError.PermissionDenied | FunctionError.TooManyExtensions | FunctionError.InitResourceExhausted | DisallowedByVpcEncryptionControl`   
Required: No

 ** Layers **   <a name="lambda-Type-FunctionConfiguration-Layers"></a>
The function's [layers](https://docs.aws.amazon.com/lambda/latest/dg/configuration-layers.html).  
Type: Array of [Layer](API_Layer.md) objects  
Required: No

 ** LoggingConfig **   <a name="lambda-Type-FunctionConfiguration-LoggingConfig"></a>
The function's Amazon CloudWatch Logs configuration settings.  
Type: [LoggingConfig](API_LoggingConfig.md) object  
Required: No

 ** MasterArn **   <a name="lambda-Type-FunctionConfiguration-MasterArn"></a>
For Lambda@Edge functions, the ARN of the main function.  
Type: String  
Length Constraints: Minimum length of 0. Maximum length of 10000.  
Pattern: `arn:(aws[a-zA-Z-]*)?:lambda:[a-z]{2}((-gov)|(-iso([a-z]?)))?-[a-z]+-\d{1}:\d{12}:function:[a-zA-Z0-9-_]+(:(\$LATEST|[a-zA-Z0-9-_]+))?`   
Required: No

 ** MemorySize **   <a name="lambda-Type-FunctionConfiguration-MemorySize"></a>
The amount of memory available to the function at runtime.  
Type: Integer  
Valid Range: Minimum value of 128. Maximum value of 32768.  
Required: No

 ** PackageType **   <a name="lambda-Type-FunctionConfiguration-PackageType"></a>
The type of deployment package. Set to `Image` for container image and set `Zip` for .zip file archive.  
Type: String  
Valid Values: `Zip | Image`   
Required: No

 ** RevisionId **   <a name="lambda-Type-FunctionConfiguration-RevisionId"></a>
The latest updated revision of the function or alias.  
Type: String  
Required: No

 ** Role **   <a name="lambda-Type-FunctionConfiguration-Role"></a>
The function's execution role.  
Type: String  
Pattern: `arn:(aws[a-zA-Z-]*)?:iam::\d{12}:role/?[a-zA-Z_0-9+=,.@\-_/]+`   
Required: No

 ** Runtime **   <a name="lambda-Type-FunctionConfiguration-Runtime"></a>
The identifier of the function's [ runtime](https://docs.aws.amazon.com/lambda/latest/dg/lambda-runtimes.html). Runtime is required if the deployment package is a .zip file archive. Specifying a runtime results in an error if you're deploying a function using a container image.  
The following list includes deprecated runtimes. Lambda blocks creating new functions and updating existing functions shortly after each runtime is deprecated. For more information, see [Runtime use after deprecation](https://docs.aws.amazon.com/lambda/latest/dg/lambda-runtimes.html#runtime-deprecation-levels).  
For a list of all currently supported runtimes, see [Supported runtimes](https://docs.aws.amazon.com/lambda/latest/dg/lambda-runtimes.html#runtimes-supported).  
Type: String  
Valid Values: `nodejs | nodejs4.3 | nodejs6.10 | nodejs8.10 | nodejs10.x | nodejs12.x | nodejs14.x | nodejs16.x | java8 | java8.al2 | java11 | python2.7 | python3.6 | python3.7 | python3.8 | python3.9 | dotnetcore1.0 | dotnetcore2.0 | dotnetcore2.1 | dotnetcore3.1 | dotnet6 | dotnet8 | nodejs4.3-edge | go1.x | ruby2.5 | ruby2.7 | provided | provided.al2 | nodejs18.x | python3.10 | java17 | ruby3.2 | ruby3.3 | ruby3.4 | python3.11 | nodejs20.x | provided.al2023 | python3.12 | java21 | python3.13 | nodejs22.x | nodejs24.x | python3.14 | java25 | dotnet10`   
Required: No

 ** RuntimeVersionConfig **   <a name="lambda-Type-FunctionConfiguration-RuntimeVersionConfig"></a>
The ARN of the runtime and any errors that occured.  
Type: [RuntimeVersionConfig](API_RuntimeVersionConfig.md) object  
Required: No

 ** SigningJobArn **   <a name="lambda-Type-FunctionConfiguration-SigningJobArn"></a>
The ARN of the signing job.  
Type: String  
Pattern: `arn:(aws[a-zA-Z0-9-]*):([a-zA-Z0-9\-])+:([a-z]{2}(-gov)?-[a-z]+-\d{1})?:(\d{12})?:(.*)`   
Required: No

 ** SigningProfileVersionArn **   <a name="lambda-Type-FunctionConfiguration-SigningProfileVersionArn"></a>
The ARN of the signing profile version.  
Type: String  
Pattern: `arn:(aws[a-zA-Z0-9-]*):([a-zA-Z0-9\-])+:([a-z]{2}(-gov)?-[a-z]+-\d{1})?:(\d{12})?:(.*)`   
Required: No

 ** SnapStart **   <a name="lambda-Type-FunctionConfiguration-SnapStart"></a>
Set `ApplyOn` to `PublishedVersions` to create a snapshot of the initialized execution environment when you publish a function version. For more information, see [Improving startup performance with Lambda SnapStart](https://docs.aws.amazon.com/lambda/latest/dg/snapstart.html).  
Type: [SnapStartResponse](API_SnapStartResponse.md) object  
Required: No

 ** State **   <a name="lambda-Type-FunctionConfiguration-State"></a>
The current state of the function. When the state is `Inactive`, you can reactivate the function by invoking it.  
Type: String  
Valid Values: `Pending | Active | Inactive | Failed | Deactivating | Deactivated | ActiveNonInvocable | Deleting`   
Required: No

 ** StateReason **   <a name="lambda-Type-FunctionConfiguration-StateReason"></a>
The reason for the function's current state.  
Type: String  
Required: No

 ** StateReasonCode **   <a name="lambda-Type-FunctionConfiguration-StateReasonCode"></a>
The reason code for the function's current state. When the code is `Creating`, you can't invoke or modify the function.  
Type: String  
Valid Values: `Idle | Creating | Restoring | EniLimitExceeded | InsufficientRolePermissions | InvalidConfiguration | InternalError | SubnetOutOfIPAddresses | InvalidSubnet | InvalidSecurityGroup | ImageDeleted | ImageAccessDenied | InvalidImage | KMSKeyAccessDenied | KMSKeyNotFound | InvalidStateKMSKey | DisabledKMSKey | EFSIOError | EFSMountConnectivityError | EFSMountFailure | EFSMountTimeout | InvalidRuntime | InvalidZipFileException | FunctionError | DrainingDurableExecutions | VcpuLimitExceeded | CapacityProviderScalingLimitExceeded | InsufficientCapacity | EC2RequestLimitExceeded | FunctionError.InitTimeout | FunctionError.RuntimeInitError | FunctionError.ExtensionInitError | FunctionError.InvalidEntryPoint | FunctionError.InvalidWorkingDirectory | FunctionError.PermissionDenied | FunctionError.TooManyExtensions | FunctionError.InitResourceExhausted | DisallowedByVpcEncryptionControl`   
Required: No

 ** TenancyConfig **   <a name="lambda-Type-FunctionConfiguration-TenancyConfig"></a>
The function's tenant isolation configuration settings. Determines whether the Lambda function runs on a shared or dedicated infrastructure per unique tenant.  
Type: [TenancyConfig](API_TenancyConfig.md) object  
Required: No

 ** Timeout **   <a name="lambda-Type-FunctionConfiguration-Timeout"></a>
The amount of time in seconds that Lambda allows a function to run before stopping it.  
Type: Integer  
Valid Range: Minimum value of 1.  
Required: No

 ** TracingConfig **   <a name="lambda-Type-FunctionConfiguration-TracingConfig"></a>
The function's AWS X-Ray tracing configuration.  
Type: [TracingConfigResponse](API_TracingConfigResponse.md) object  
Required: No

 ** Version **   <a name="lambda-Type-FunctionConfiguration-Version"></a>
The version of the Lambda function.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 1024.  
Pattern: `(\$LATEST|[0-9]+)`   
Required: No

 ** VpcConfig **   <a name="lambda-Type-FunctionConfiguration-VpcConfig"></a>
The function's networking configuration.  
Type: [VpcConfigResponse](API_VpcConfigResponse.md) object  
Required: No

## See Also


For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/lambda-2015-03-31/FunctionConfiguration) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/lambda-2015-03-31/FunctionConfiguration) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/lambda-2015-03-31/FunctionConfiguration)