Wow, I didn't know about this (and I have seen it exists since 2018 version 😅). I will try it, thank you very much for your recomendation!

Probably this is the point. We use BPL and we get the stream assigning it as you said. We will check our code to change it as you recommend. Thanks!

I found this article: https://community.intersystems.com/post/no-access-control-allow-origin-h...

This is what's happening to me from my web application (excluding the webgateway error, which I think simply the description isn't correct).

Checking the CSPSystem user, I've assigned it the role of the database where the FHIR repository is located, and it still doesn't work. However, if I assign it the %All role, it works. So, I'm missing some permission for this user; I can't figure out which one...