Question about "Trust All Certificates" Option in REST GET Snap


Please forgive my ignorance in this subject matter, but I have created a few basic APIs in the APIM from existing pipelines. When I try to call them using a groundplex secure URL in a REST GET snap, the only way I can get a successful call is to check the box “Trust all Certificates”. Can anyone provide me any guidance or recommendations in a scenario like this one?

Please let me know if any additional information is needed. Any insight/best practices for this option would be much appreciated.