Problem when going live. Error displayed: "The token passed in was not found in the system"

[ThomasFrom]

I integrated paypal express checkout into my site. Everything works perfectly in sandbox mode. But when I put my clientID, clientSecret (the ones for production) and disable sandbox mode, I get this error : "The token passed in was not found in the system".

I have been looking for a solution for several days, without finding anything.

Can someone help me please? 

Thomas

[Nexus_Software]

Hello @ThomasFrom ,

This can happen if the API request for create Payment went to the sandbox. Can you double check your environment settings?

Thank you.

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[ThomasFrom]

Thank You for the answer. 

The environment settings have been well modified. So I don't think it comes from this.

Thomas

[Din454]

did you tried disabling the sandbox.?

[ThomasFrom]

I did. But my problem that I didn't have active a certificate.

THomas