Hello Guys,
Thank you for helping me to resolve below issues. I am using D365 trial from Dynamics portal.
Getting the error as "Validation Failed, <"Channel has not been published">, while I am trying to validate devices for activation. see attached below screen shot
Then, I tried to publish the channel using the functionality " Channel categories and product attributes" , but it stuck with an another error as "Field Internal organization must be filled in", see attached below screen shot.