Google Translate API - Access Denied Error 403

Question

I am using Google API for one of my project. I completed all the formalities with google. I pay the bill for using it. But I cannot move out with one issue. If I send data for translation back to back, google reverts back with Access denied Error 403. So I had to put some delay in my code. But as a matter of fact total time is increasing. So what is the possible way to recover this issue. I am using C# dot net to call the google API.

> https://www.googleapis.com/language/translate/v2?key=xxxxxxxxxxxxxxxxxxxxxxx&q={0}&source=en &target=sv

Answer 1

From Google translate API FAQ page:

You may be exceeding your quota: either the daily billable total, or the limit on request characters per second. To view or change usage limits for your project, or to request an increase to your quota, do the following:

For more information Google translate API FAQ