Every API provider enforces API limits. API limits are nothing but restrictions imposed by service provider to limit the API usage. This is primarily done to safeguard servers from excess load. Even we have our own API limits, which are applicable to our API users.
This error however indicates that the API limits set by your stock broker was breached by AutoTrader Web. This is a very unlikely scenario, simply because we have our own API limits which are more stringent that the broker’s API limits.
Solution
So far, we have only noticed this with Angel Broking’s Smart API. After careful study, it was found that there exists a bug in Smart API api limit check component. We have reported it to them & their team is investigating it.
If you see similar errors for any other broker, then please inform our support team.