We have an Alexa Smart Home Skill, the only configured language is English (UK).
If we specify a Lambda ARN for Europe in the eu-west-1 region and then try to test the skill, we don't see Alexa calling the lambda. If we create a lambda with the exact same configuration and the exact same code in the us-east-1 region, and specify its ARN for North America, we can see Alexa calling the US lambda and it working properly. The default region for the skill is set to Europe.
What might be the reasons for Alexa not working with the lambda in Europe?