# Update Configuration dialog box
Update Configuration dialog box

The **Update Configuration** dialog box in the AWS Toolkit for JetBrains is displayed whenever you update the configuration for an AWS Lambda function. The information that you provide differs slightly depending on whether the project's Lambda function is of package type `Zip` or `Image`.

The **Update Configuration** dialog box for the `Zip` package type:

![\[The Update Configuration dialog box for Zip applications.\]](http://docs.aws.amazon.com/toolkit-for-jetbrains/latest/userguide/images/sam-update-config-zip.png)


The **Update Configuration** dialog box for the `Image` package type:

![\[The Update Configuration dialog box for Image applications.\]](http://docs.aws.amazon.com/toolkit-for-jetbrains/latest/userguide/images/sam-update-config-image.png)


The **Update Configuration** dialog box contains the following items:

**Name**  
(Required) The function's name. Can contain only the uppercase letters `A` through `Z`, the lowercase letters `a` through `z`, the numbers `0` through `9`, hyphens (`-`), and underscores (`_`). The name must be less than 64 characters in length.

**Description**  
(Optional) Any meaningful description about the function.

**Package Type**  
(Required) The Lambda function's package type, which can be either `Zip` or `Image`.

**Handler**  
(Required for `Zip` packages only) The ID of the corresponding Lambda function handler for [Java](https://docs.aws.amazon.com/lambda/latest/dg/java-handler.html), [Python](https://docs.aws.amazon.com/lambda/latest/dg/python-handler.html), [Node.js](https://docs.aws.amazon.com/lambda/latest/dg/nodejs-handler.html), or [C\$1](https://docs.aws.amazon.com/lambda/latest/dg/csharp-handler.html).

**Runtime**  
(Required for `Zip` packages only) The ID of the [Lambda runtime](https://docs.aws.amazon.com/lambda/latest/dg/lambda-runtimes.html) to use.

**Timeout (seconds)**  
(Required) The amount of time that Lambda allows a function to run before stopping it. Specify an amount up to 900 seconds (15 minutes).

**Memory (MB)**  
(Required) The amount of memory available to the function as it runs. Specify an amount [between 128 MB and 3,008 MB](https://docs.aws.amazon.com/lambda/latest/dg/gettingstarted-limits.html) in 64-MB increments.

**Environment Variables**  
(Optional) Any [environment variables](https://docs.aws.amazon.com/lambda/latest/dg/configuration-envvars.html) for the Lambda function to use, specified as key-value pairs. To add, change, or delete environment variables, choose the folder icon, and then follow the on-screen instructions.

**IAM Role**  
(Required) Choose an available [Lambda execution role](https://docs.aws.amazon.com/lambda/latest/dg/lambda-intro-execution-role.html) in the connected AWS account for Lambda to use for the function. To create an execution role in the account and have Lambda use that role instead, choose **Create**, and then follow the on-screen instructions.

**Enable AWS X-Ray**  
(Optional) If selected, [Lambda enables AWS X-Ray](https://docs.aws.amazon.com/lambda/latest/dg/services-xray.html) to detect, analyze, and optimize performance issues with the function. X-Ray collects metadata from Lambda and any upstream or downstream services that make up your function. X-Ray uses this metadata to generate a detailed service graph that shows performance bottlenecks, latency spikes, and other issues that impact function performance.