Okta integration with SCIM server

I’m trying to call a SCIM server which has self signed certificate. When I’m trying to call the SCIM user creating API (/User), I’m getting the following error (Refer the figure below).

Given username and password are correct as this endpoint can be invoked using CURL with -k(insecure) option. As per the SCIM server logs it seems that this is due to an unknown certificate. Since this is for a testing purposes, it there any way that I can upload the self signed certificate to the okta trust store or is there any other alternative way of dong this?

I want to check whether okta can successfully call the SCIM server that we are using.

Appreciate your suggestions

Slightly off topic, but I’d recommend you set up a free cert from let’s encrypt (or equivalent wherever you are hosting your app)