# API Errors

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We have come across some instances of custom captchas that are being marked with a status code of 200, indicating a successful request. To ensure accurate billing and prevent any charges for these requests, it is necessary for us to mark them as 422. We kindly ask for your cooperation in **reporting any encounters with custom captchas where the status code is 200**. Your continued support is greatly appreciated. Thank you!
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Below is a list of all the HTTP error codes you may encounter using the WebScrapingAPI:

<table><thead><tr><th width="96" align="center">Code</th><th>Description</th></tr></thead><tbody><tr><td align="center">400</td><td><strong>Bad Request</strong> – Your request is invalid or has invalid parameters. This error code along the error message is also sent when the url could not be properly scraped.</td></tr><tr><td align="center">401</td><td><strong>Unauthorized</strong> – Your API key is wrong or invalid or your credit quota is exceeded.</td></tr><tr><td align="center">403</td><td><strong>Forbidden</strong> – You do not have sufficient rights to a resource such as JavaScript rendering or country specific geolocation. Please upgrade your subscription plan accordingly.</td></tr><tr><td align="center">406</td><td><strong>Not Acceptable</strong> – You requested a format that is not supported.</td></tr><tr><td align="center">422</td><td><p><strong>Unprocessable Entity</strong> - Your request was correct but the API failed to fulfill it. You can receive this code in one of the following situations: </p><ul><li>the target website returned a CAPTCHA challenge under status 200 OK </li><li>the target website returned a CAPTCHA challenge after a request with <code>render_js</code> disabled </li><li>the response HTML does not contain a valid <code>&#x3C;body></code> tag </li><li>the target website is an Instagram profile and the response is the Instagram login page </li><li>you used the <code>wait_for_css</code> parameter and the selector does not exist/appear on the website</li></ul></td></tr><tr><td align="center">429</td><td><strong>Too Many Requests</strong> – You’re making too many requests in short succession or too many parallel requests. This error code is also thrown by Google when the API is detected.</td></tr><tr><td align="center">500</td><td><strong>Internal Server Error</strong> – We had a problem with our server. Please try again later!</td></tr><tr><td align="center">503</td><td><strong>Service Unavailable</strong> – We’re temporarily offline for maintenance. Please try again later!</td></tr></tbody></table>