How can I troubleshoot and solve the issue of “invalid API version 0.0”?

In the context of Salesforce, if you are getting the issue of “invalid API version 0.0” while integrating with a third-party API, then you can follow the several steps which are given below:-

Checking API documentation

First, try to check the API documentation to ensure that you are using an appropriate API version.

Update API version

Try to update the version of API to an appropriate one which should be based on your particular documentation. You can adjust the version in your API request headers or Configuration.

// Example: Set API version in HTTP headers
Const requestOptions = {
    Method: ‘GET’,
    Headers: {
        ‘Content-Type’: ‘application/json’,
        ‘Api-Version’: ‘1.0’, // Update to a valid version
    },
};
// Make the API request
Fetch(‘https://api.example.com/resource’, requestOptions)
    .then(response => response.json())
    .then(data => console.log(data))
    .catch(error => console.error(‘Error:’, error));

Verify request format

Try to ensure that your particular API request follows the right format which is specified in the documentation. You should pay attention to headers, parameters, and even payload structure.

Check API Access

Now try to check whether your application has the required permissions or not for acquiring access to the API with the specified version.

Contact the API provider

If you are still receiving the same issue even after following the above steps or points then you should contact with the API provider. They may provide more insights about the cause and troubleshooting method of this particular issue.