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Checkout.com Invalid API Version error encountered during API calls.

The API version specified in the request is not supported by Checkout.com.

Understanding Checkout.com API

Checkout.com is a leading payment gateway provider that offers a comprehensive suite of APIs to facilitate online transactions. Its APIs are designed to handle various payment processes, including authorization, capture, and refunds, making it a vital tool for businesses looking to streamline their payment operations.

Identifying the Symptom

When integrating with Checkout.com, you might encounter an error message stating "Invalid API Version". This error typically appears when making API calls, indicating a mismatch between the API version specified in your request and the versions supported by Checkout.com.

Exploring the Issue

What Causes the Invalid API Version Error?

The "Invalid API Version" error occurs when the API version specified in your request header is not recognized by Checkout.com. This can happen if you are using a deprecated version or if there is a typo in the version number.

Understanding API Versioning

API versioning is crucial for maintaining compatibility and ensuring that your application can communicate effectively with Checkout.com's services. Each version may introduce new features or deprecate old ones, so using the correct version is essential.

Steps to Fix the Issue

Step 1: Check the Current API Version

First, verify the API version you are currently using in your application. This is typically specified in the request header as "Cko-Version". Ensure that it matches one of the supported versions listed in the Checkout.com API documentation.

Step 2: Update Your API Version

If you are using an unsupported version, update your request to use a valid version. For example, if the latest supported version is "1.0", your request header should include:

{
"Cko-Version": "1.0"
}

Step 3: Test Your API Calls

After updating the API version, test your API calls to ensure that the error is resolved. You can use tools like Postman to send requests and verify responses.

Conclusion

By following these steps, you can resolve the "Invalid API Version" error and ensure seamless integration with Checkout.com's payment gateway. Always refer to the official documentation for the latest updates and supported API versions.

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