AWS ApiGateway: Unable to retrieve DistributionHostedZoneId attribute for AWS::ApiGateway::DomainName - amazon-web-services

Question

We are using AWS API Gateway, and I'm using CloudFormation to register a domain and an A record, as follows:
Domain:
Type: AWS::ApiGateway::DomainName
Properties:
# EnvironmentName starts with an upper case letter, but the domain is created anyway
DomainName: !Sub "${EnvironmentName}.mycompany.com"
# this is a single certificate, used for all envs, and must be in virginia
CertificateArn: !ImportValue DomainCertificateArn
SecurityPolicy: TLS_1_2
EndpointConfiguration:
Types:
- EDGE
ARecord:
Type: AWS::Route53::RecordSet
Properties:
HostedZoneId: Fn::ImportValue !Sub "${EnvironmentName}-HostedZoneId"
# resolves to Z032215012YHJZINBEW
Type: A
Name: !Ref Domain
AliasTarget:
DNSName: !GetAtt Domain.DistributionDomainName
HostedZoneId: !GetAtt Domain.DistributionHostedZoneId
However, I'm seeing the following error when running this against my environment:
Unable to retrieve DistributionHostedZoneId attribute for AWS::ApiGateway::DomainName
I've looked in the API Gateway console to check on this domain entry, and it does exist, with type EDGE, and all the other params present. The Hosted zone id however is not the same value as that used in the template.

Answer 1

According to the documentation you should be able to get this value from the distributionHostedZoneId attribute of your AWS::ApiGateway::DomainName resource.
Based on the documentation and your file nothing appears to be configured incorrectly, there is also this line in the documentation regarding the DistributionHostedZoneId.
The only valid value is Z2FDTNDATAQYW2 for all regions.
This is the CloudFront distribution ID (as you're using regional) so you could set this value specifically. Otherwise validate that it gets created as a EDGE custom domain.