AI-generated Key Takeaways
- 
          This guide explains error messages returned by the Street View Static API and provides instructions for resolving them. 
- 
          Invalid requests result in a 4xxstatus code with a descriptive message, such as errors related to parameters or invalid API keys.
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          When a valid request cannot display a street view image due to issues like usage limits, either text or an error image is returned. 
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          Using the API without a key or billing enabled leads to an error image with a link to further information and solutions. 
The Street View Static API may issue an error or warning when something goes wrong. This guide explains each error message, and provides further instructions for resolving errors.
Invalid requests
In the case of an invalid request, the Street View Static API returns
  an HTTP 4xx status code and a message describing the
  problem. Below are examples of such error conditions. Note: This is not
  a complete list of the possible errors. Please check the actual error code
  and message returned by the API for details of specific problems.
| Example of error condition | Status code | 
|---|---|
| The request includes an invalid parameter, or a required parameter is
      missing. For example, the sizeparameter is not within the
      expected range of numeric values, or is missing from the request. | 400 BAD REQUEST | 
| The API key included in the request is invalid. | 403 FORBIDDEN | 
Errors that prevent a street view image from being displayed
If the request is valid, but another error occurs that prevents the street view image from
  being displayed, the Street View Static API returns either text or an error
  image instead of the street view image, depending on the error. An example of such an error
  condition is when the application exceeds its
  usage limits.
 
  
Errors related to API keys and billing
If you use the Street View Static API without an API key, or if billing is not enabled on your account, the page displays an error image instead of a street view image, with a link indicating the type of error. For example "g.co/streetviewerror/key".
| Keyless errors and solutions | |
|---|---|
|  | You are using the Street View Static API without an API key. To resolve, you must: | 
|  | Your request is missing a digital signature (required). To resolve, Sign your URL |