Alexa says doesn't find devices

I’m a brazilian (sorry my bad english) and i’m new in automation world so i’ll try to be quick

i have integrated in home assistant, on node-red, the node-red-contrib-alexa-remote2
and when a call a device action on alexa with the “On device activity” with a device on Home Assistant target, works but Alexa says things like “i don`t know this device” etc.
I have my HA devices listed on Alexa, but i wanna know how i turn Off this specific massages

i think its because i’m trying to call a HA device and no a Alexa device but i don’t wanna change and call a HA device inside a Alexa
sorry if its sounds confuse i can aprimorate more

and again sorry by my bad english