Hi @JayCustom , I'm sorry for my bad English, I'm Brazilian and I was here reading your topic. Look, last week I was in the same situation as you to implement security even if it is minimal in the company's system in the API part of the system. I did it, I implemented JWT, where a Bearer token...
In your external_flash_texts or external_override_flash_texts search by " furni_placement_error " or add in end of line ex: furni_placement_error=TEXT OF YOUR ERROR HERE
See your source code of emulator maybe.