Amazon Location Service - API key related

The error message you're encountering suggests that there might be an issue with how you're making the API request to Amazon Location Service. To properly test your API key and Place Index, you need to ensure you're using the correct API endpoint and including all necessary parameters.

Here are some steps to help you test your setup:

1. Make sure you're using the correct API endpoint for the specific operation you want to perform. For example, if you're trying to search for a place, you should be using the SearchPlaceIndexForText or SearchPlaceIndexForPosition API.

2. Include your API key in the request. The API key should be included as a query parameter named 'key' in your request URL.

3. Ensure you're specifying the correct action in your request. The action should match one of the permissions you granted when creating the API key (e.g., geo-places:SearchPlaceIndex).

4. Double-check that you've included all required parameters for the specific API call you're making. For instance, if you're using SearchPlaceIndexForText, you need to provide the IndexName and Text parameters.

5. Verify that the API key you're using has the necessary permissions for the action you're trying to perform. You can check this in the Amazon Location Service console under the API keys section.

If you're still encountering issues after verifying these points, you may want to try creating a simple test application using one of the AWS SDKs or using a tool like Postman to help diagnose the problem. This can help ensure that all the necessary headers and authentication details are being included correctly in your request.

Remember, when using API keys, it's crucial to implement proper security measures, such as setting allowed referrers and expiration times, especially when moving to a production environment.

If the problem persists, you may need to contact AWS support for further assistance, as they can provide more specific guidance based on your account and configuration.

Sources
Use the Amazon Location Service console to authenticate - Amazon Location Service
Authenticate with Amazon Location Service - Amazon Location Service
New features and developer experience with enhanced Amazon Location Service | Front-End Web & Mobile