When I tried my API key on Postman that give me this response
“The API key is invalid”
Please can anyone guide me? 
If you test the connection with Postman, do you get the same result?
You probably know it, but just in case: Postman is a free app.
If you see the problem even with Postman, a screenshot of the result could be helpful.
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[quote=“Kamran_Mirza, post:1, topic:26840”]
When I tried my API key on Postman that give me this response
“The API key is invalid”
Please can anyone guide me?
[/quote] Welcome To E-ZPassNJ
Copy and Paste Carefully: Ensure you’ve copied the API key correctly from the source. Even a single extra space or character can invalidate it.