when connecting to connect system and wanting to request from the API it shows that the webserver is not secure add a SSL certificate, and when i add one it says it doesn't match any of the subject alternative names

This is missing so many details .....

Some questions coming to my mind:

- What do you mean with "i made sure the certificate matches the api"?

- Is this a self signed certificate?

- Is the root CA know to Appian?

We need details, lot's of details!

- the error in appian keeps saying that the certificate that i added to verify the https website that i am extracting the API from is not matching my API request , that what i mean by i am 100% sure it is the right certificate..

-yes

-yes

Hm ... I did a quick search on google and this seems to be a pretty common problem and is not specific to Appian.

so , in your opinion it might be an appian issue and not a certificate issue ?

so , in your opinion it might be an appian issue and not a certificate issue ?

No. I am pretty sure it has something to do with your certificate. What level of experience do you have with SSL and certificates? In case you are not a real expert in this, just like me, I suggest to try to find the issue on your side. I had issues with certificates that took days for my team and me to identify and fix.