AWS ECS: Invalid service in ARN (Service: AmazonECS; ...) - amazon-web-services

Question

Trying to create a ECS Service (on Fargate) with cloudformation but got error:
Invalid service in ARN (Service: AmazonECS; Status Code: 400; Error
Code: InvalidParameterException; Request ID: xxx).
According to error message seems some ARN is wrong, but I didn't find the reason, I checked ARN of IAM roles and its ok. The other ARN are passed with !Ref function (so not a typo error)
All Resources (including from all others nested templates, vpc, cluster, alb etc) are created, except the "Service" resouce (the ECS service).
Below is the template used (nested template). All parameters are ok (passed from root template). Parameters TaskExecutionRole and ServiceRole are ARNs from IAM roles created by ECS wizard:
Description: >
Deploys xxx ECS service, with load balancer listener rule,
target group, task definition, service definition and auto scaling
Parameters:
EnvironmentName:
Description: An environment name that will be prefixed to resource names
Type: String
EnvironmentType:
Description: See master template
Type: String
VpcId:
Type: String
PublicSubnet1:
Type: String
PublicSubnet2:
Type: String
ALBListener:
Description: ALB listener
Type: String
Cluster:
Description: ECS Cluster
Type: String
TaskExecutionRole:
Description: See master template
Type: String
ServiceRole:
Description: See master template
Type: String
ServiceName:
Description: Service name (used as a variable)
Type: String
Default: xxx
Cpu:
Description: Task size (CPU)
Type: String
Memory:
Description: Task size (memory)
Type: String
Conditions:
HasHttps: !Equals [!Ref EnvironmentType, production]
HasNotHttps: !Not [!Equals [!Ref EnvironmentType, production]]
Resources:
ServiceTargetGroup:
Type: AWS::ElasticLoadBalancingV2::TargetGroup
Properties:
Name: !Sub '${EnvironmentName}-${ServiceName}'
VpcId: !Ref VpcId
TargetType: ip
Port: 80
Protocol: HTTP
AlbListenerRule:
Type: AWS::ElasticLoadBalancingV2::ListenerRule
Properties:
Actions:
- Type: forward
TargetGroupArn: !Ref ServiceTargetGroup
Conditions:
- Field: host-header
Values: [www.mydomain.com] # test
ListenerArn: !Ref ALBListener
Priority: 1
TaskDefinition:
Type: AWS::ECS::TaskDefinition
Properties:
Family: !Sub '${EnvironmentName}-${ServiceName}-Task'
ContainerDefinitions:
- Name: !Ref ServiceName
Image: nginx
PortMappings:
- ContainerPort: 80
LogConfiguration:
LogDriver: awslogs
Options:
awslogs-group: !Ref EnvironmentName
awslogs-region: !Ref AWS::Region
awslogs-stream-prefix: !Ref ServiceName
NetworkMode: awsvpc
RequiresCompatibilities: [FARGATE]
Cpu: !Ref Cpu
Memory: !Ref Memory
ExecutionRoleArn: !Ref TaskExecutionRole
Service:
Type: AWS::ECS::Service
DependsOn: TaskDefinition
Properties:
Cluster: !Ref Cluster
ServiceName: !Ref ServiceName
TaskDefinition: !Ref TaskDefinition
LaunchType: FARGATE
DesiredCount: 1
LoadBalancers:
- ContainerName: !Ref ServiceName
ContainerPort: 80
TargetGroupArn: !Ref ServiceTargetGroup
NetworkConfiguration:
AwsvpcConfiguration:
AssignPublicIp: ENABLED
Subnets:
- !Ref PublicSubnet1
- !Ref PublicSubnet2
Role: !Ref ServiceRole
I lost a few hours in this and could not solve it, I reviewed a lot in the documentation but nothing, if someone knows how to help.
Thanks!

Answer 1

The error message is confusing because it does not explain which parameter is wrong. Amazon API expects resource ARNs in several parameters including Cluster, TaskDefinition and TargetGroup. The error happens when one of these parameters are wrong. Please check carefully these parameters and make sure they are valid ARNs.
I had exactly the same error and in my case I made a mistake and provided wrong Cluster value.
And I am posting an answer here because this was the first search result for this error message and it had no answer.

Answer 2

The problem for me was that the default AWS region was set to the wrong one. To fix that, run the following command (using the correct region).
$ aws configure set default.region us-west-2