The remote certificate is invalid according to the validation procedure

Hi EveryBody

I am calling the service from a 3rd party when the following error message appears:

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People tell me whether the error is from the 3rd party web service or the NAV. And please give me a solution and fix this problem. I use NAV 2013

Thanks so much

It looks like is 3rd party error.

There certificate might have expired which C/al code want to execute.