ask deploy error with EU-WEST-1

I got the error "custom - object has missing required properties" when I try to deploy my skill with a function on eu-west-1. With us-east-1 everything works as expected.

Skill and Function was updated, but not the skill endpoint.

1. Create a skill in the developer console

2. Create a function in the aws console (region=eu-west-1)

3. Link "Alexa Skills Kit" Qualification-ID to Skill ID

4. Link Skill Endpoint "Default Region" to the function

5. Build the skill

6. ask clone

7. ask deploy

I tried other profiles to clone and deploy. Same behavior.
Same when I use "ask new" and change the target to a eu-west-1 function later.

What can I do?

-------------------- Update Skill Project --------------------
Skill Id: amzn1.ask.skill.fe58d2cc-51bb-4066-96f8-7a99360e284e
Skill deployment finished.
Model deployment finished.
Lambda deployment finished.
Lambda function(s) updated:
  [Lambda ARN] arn:aws:lambda:eu-west-1:977739547106:function:ask-custom-mist-default
[Info]: No in-skill product to be deployed.
Call enable-skill error.
Error code: 403
{
  "message": "Skill is not ready for enablement.",
  "violations": [
    {
      "message": "custom - object has missing required properties ([\"endpoint\"])"
    }
  ]
}

question