Missing or incorrect OpenApi version

Oct 13, 2025 by talynt.org 111 views

Invalid OpenApi Document: Troubleshooting SAM App Publishing Issues with AWS SAR

When publishing a Serverless Application Model (SAM) application to AWS Serverless Application Repository (SAR), you may encounter an "Invalid OpenApi document" error. This issue can be frustrating, especially when your application deploys successfully using sam deploy. In this article, we will delve into the possible causes of this error and provide step-by-step solutions to help you resolve the issue.

The "Invalid OpenApi document" error typically occurs when the OpenApi specification in your SAM template is not correctly formatted or is missing required information. OpenApi is a standard for describing RESTful APIs, and it's used by SAM to define the API endpoints and their corresponding methods.

Before we dive into the solutions, let's explore some common causes of the "Invalid OpenApi document" error:

Missing or incorrect OpenApi version: Make sure you're using the correct OpenApi version in your SAM template. The current recommended version is OpenApi 3.0.2.
Incorrect API endpoint formatting: Ensure that your API endpoints are correctly formatted and follow the OpenApi specification.
Missing or incorrect API method definitions: Verify that you've defined all required API methods (e.g., GET, POST, PUT, DELETE) and that they're correctly formatted.
Incorrect use of OpenApi extensions: Be cautious when using OpenApi extensions, as they can sometimes cause issues with the OpenApi validation.

To resolve the "Invalid OpenApi document" error, follow these step-by-step troubleshooting steps:

Step 1: Review Your SAM Template

Carefully review your SAM template to ensure that it's correctly formatted and follows the OpenApi specification. Check for any syntax errors or missing information.

Step 2: Validate Your OpenApi Document

Use an OpenApi validation tool, such as the OpenApi Validator or Swagger Editor, to validate your OpenApi document. This will help you identify any issues with your API endpoint formatting, method definitions, or other OpenApi-related problems.

Step 3: Check Your API Endpoint Formatting

Verify that your API endpoints are correctly formatted and follow the OpenApi specification. Make sure to include the correct HTTP method, path, and any required query parameters or headers.

Step 4: Define All Required API Methods

Ensure that you've defined all required API methods (e.g., GET, POST, PUT, DELETE) and that they're correctly formatted. You can use the OpenApi specification to determine the required methods for your API.

Step 5: Review Your OpenApi Extensions

Be cautious when using OpenApi extensions, as they can sometimes cause issues with the OpenApi validation. Review your extensions to ensure that they're correctly formatted and don't conflict with the OpenApi specification.

Step 6: Update Your SAM Template

Once you've identified and fixed any issues with your OpenApi document, update your SAM template to reflect the changes. Make sure to save the updated template and redeploy your application using sam deploy.

Step 7: Publish Your Application to SAR

After successfully deploying your application, you can publish it to AWS SAR using the sam publish command. If you encounter any issues during the publishing process, refer to the AWS SAR documentation for troubleshooting guidance.

The "Invalid OpenApi document" error can be frustrating, especially when your SAM application deploys successfully using sam deploy. By following the troubleshooting steps outlined in this article, you should be able to identify and resolve the issue. Remember to carefully review your SAM template, validate your OpenApi document, and ensure that your API endpoint formatting, method definitions, and OpenApi extensions are correctly formatted. With these steps, you'll be able to publish your SAM application to AWS SAR without any issues.

For more information on SAM and AWS SAR, refer to the following resources:

AWS SAM Documentation
AWS SAR Documentation
OpenApi Specification
OpenApi Validator
Swagger Editor
Frequently Asked Questions: Invalid OpenApi Document Error with SAM App Publishing to SAR

In our previous article, we explored the common causes and troubleshooting steps for the "Invalid OpenApi document" error when publishing a Serverless Application Model (SAM) application to AWS Serverless Application Repository (SAR). In this article, we'll address some frequently asked questions (FAQs) related to this issue.

Q: What is the OpenApi specification, and why is it required for SAM app publishing?

A: The OpenApi specification is a standard for describing RESTful APIs. It's required for SAM app publishing because it helps define the API endpoints and their corresponding methods, which are essential for the application's functionality.

Q: What are the common causes of the "Invalid OpenApi document" error?

A: The common causes of the "Invalid OpenApi document" error include:

Missing or incorrect OpenApi version
Incorrect API endpoint formatting
Missing or incorrect API method definitions
Incorrect use of OpenApi extensions

Q: How can I validate my OpenApi document?

A: You can use an OpenApi validation tool, such as the OpenApi Validator or Swagger Editor, to validate your OpenApi document. These tools will help you identify any issues with your API endpoint formatting, method definitions, or other OpenApi-related problems.

Q: What is the correct format for API endpoints in SAM?

A: The correct format for API endpoints in SAM is as follows:

Use the correct HTTP method (e.g., GET, POST, PUT, DELETE)
Use the correct path (e.g., /users, /products)
Include any required query parameters or headers

Q: How do I define all required API methods in SAM?

A: To define all required API methods in SAM, follow these steps:

Review the OpenApi specification to determine the required methods for your API.
Define each method using the correct HTTP method and path.
Include any required query parameters or headers.

Q: Can I use OpenApi extensions in SAM?

A: Yes, you can use OpenApi extensions in SAM. However, be cautious when using them, as they can sometimes cause issues with the OpenApi validation. Review your extensions to ensure that they're correctly formatted and don't conflict with the OpenApi specification.

Q: How do I update my SAM template to reflect changes to my OpenApi document?

A: To update your SAM template, follow these steps:

Review your OpenApi document to identify any changes.
Update your SAM template to reflect the changes.
Save the updated template and redeploy your application using sam deploy.

Q: What are some best practices for publishing SAM apps to SAR?

A: Some best practices for publishing SAM apps to SAR include:

Carefully review your SAM template to ensure that it's correctly formatted and follows the OpenApi specification.
Validate your OpenApi document using an OpenApi validation tool.
Ensure that your API endpoint formatting, method definitions, and OpenApi extensions are correctly formatted.
Update your SAM template to reflect any changes to your OpenApi document.

The "Invalid OpenApi document" error can be frustrating, especially when publishing a SAM application to AWS SAR. By understanding the common causes and troubleshooting steps, as well as the FAQs outlined in this article, you'll be better equipped to resolve this issue and successfully publish your SAM application to SAR.

For more information on SAM and AWS SAR, refer to the following resources: