Signature for this request is not valid.


I am using the Testnet environment with Postman.
I generated the API_KEY and the SECRET_KEY on the
I put the API_KEY and SECRET_KEY on the current value inside the Postman binance_com_spot_testnet_api.postman_environment.json.

I am trying to call the Trade -> New Order endpoint but whit no success.

I have this error message: “Signature for this request is not valid.”

What am I doing wrong?

please if you can make the call to /api/v3/account to see balance,
then make a screenshot of the error page.