I recently got the following error when setting up a Alexa skill together with a Lambda function:
The trigger setting for the Lambda arn:aws:lambda:us-east-"function" is invalid. Error code: SkillManifestError
Not knowing a lot about Alexa I started to investigate this. I figured out that for this to work you need to add a "Alexa skills kit" trigger to your lambda. As seen below:
After this you will need to add your Alexa Skill Id to the configuration of the "Alexa skills kit", which is a dialog just below. The Skill Id can be found on the endpoint page of your Alexa skill.
This solved the issue for me! I hope this helps someone out there.
ps. I read somewhere that changing your lambda's region to Ireland helped some people with this issue.