Hi @yan-olydis, thanks for reporting the issue. Could you share your template file? SAM CLI does not cover resolving all the intrinsic functions and from the traceback, this might be throwing an error because of that.

from aws-sam-cli.

this is my template
AWSTemplateFormatVersion: '2010-09-09'

Parameters:

General parameters

EnvType:
Description: Environment Type
Type: String
AllowedValues:
- development
- staging
- production

DBInstanceClass:
Description: Instance class
Type: String

isEnableDeletionProtection:
Description: Enable Deletion Protection
Type: String
Default: false
AllowedValues:
- true
- false

isEnableBackup:
Description: Enable DocumentDB Backup
Type: String
Default: false
AllowedValues:
- true
- false

Conditions:
isProduction: !Equals [ !Ref EnvType, "production" ]
isDev: !Equals [ !Ref EnvType, "development" ]

Mappings:
Network:
development:
NbAzs: 3
CidrBlockPrefix: 10.1
CidrBlock: 10.1.0.0/16
staging:
NbAzs: 3
CidrBlockPrefix: 10.2
CidrBlock: 10.2.0.0/16
production:
NbAzs: 3
CidrBlockPrefix: 10.3
CidrBlock: 10.3.0.0/16

Resources:
Network:
Type: AWS::CloudFormation::Stack
Properties:
StackName: my-vpc
TemplateURL: 'network/vpc.yml'
Parameters:
EnvType: !Ref EnvType
RegionAzs: !FindInMap [Network, !Ref EnvType, NbAzs]
CidrBlockPrefix: !FindInMap [Network, !Ref EnvType, CidrBlockPrefix]

EcsCluster:
Type: AWS::CloudFormation::Stack
Properties:
StackName: my-ecs
TemplateURL: 'ecs/ecs.yml'
Parameters:
EnvType: !Ref EnvType
VpcId: !GetAtt Network.Outputs.VpcId
CidrBlockPrefix: !FindInMap [Network, !Ref EnvType, CidrBlockPrefix]

LoadBalancing:
Type: AWS::CloudFormation::Stack
Properties:
StackName: my-nlb
TemplateURL: 'nlb/nlb.yml'
Parameters:
VpcId: !GetAtt Network.Outputs.VpcId
PrivateSubnets: !GetAtt Network.Outputs.PrivateSubnets
PrivateHostedZoneId: !GetAtt Network.Outputs.PrivateHostedZoneId

DocumentDB:
Type: AWS::CloudFormation::Stack
DependsOn:
- Encryption
Properties:
StackName: my-database
TemplateURL: 'db/db.yml'
Parameters:
EnvType: !Ref EnvType
PrivateSubnets: !GetAtt Network.Outputs.PrivateSubnets
AvailabilityZones: !GetAtt Network.Outputs.AvailabilityZones
EncryptionKeyId: !GetAtt Encryption.Outputs.EncryptionKeyId
DBInstanceClass: !Ref DBInstanceClass
isEnableDeletionProtection: !Ref isEnableDeletionProtection
isEnableBackup: !Ref isEnableBackup
VpcId: !GetAtt Network.Outputs.VpcId

Encryption:
Type: AWS::CloudFormation::Stack
Properties:
StackName: my-encryption-key
TemplateURL: encryption/encryption.yml
Parameters:
EnvType: !Ref EnvType

from aws-sam-cli.

Thanks for providing the template file. I tried running sam build on the below template, but the command succeeds for me. I don't see any lambda/serverless functions in the template you provided as well. Would you be able to provide the nested stack templates? My guess is there is some intrinsic function in that template which SAM CLI does not support.

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: >
  sam-app-6787

  Sample SAM Template for sam-app-6787

Parameters:     
  EnvType:
    Description: Environment Type
    Type: String
    AllowedValues:
      - development
      - staging
      - production

  DBInstanceClass:
    Description: Instance class
    Type: String

  isEnableDeletionProtection:
    Description: Enable Deletion Protection
    Type: String
    Default: false
    AllowedValues:
      - true
      - false

  isEnableBackup:
    Description: Enable DocumentDB Backup
    Type: String
    Default: false
    AllowedValues:
      - true
      - false

  Conditions:
    isProduction: !Equals [ !Ref EnvType, "production" ]
    isDev: !Equals [ !Ref EnvType, "development" ]

  Mappings:
    Network:
      development:
        NbAzs: 3
        CidrBlockPrefix: 10.1
        CidrBlock: 10.1.0.0/16
      staging:
        NbAzs: 3
        CidrBlockPrefix: 10.2
        CidrBlock: 10.2.0.0/16
      production:
        NbAzs: 3
        CidrBlockPrefix: 10.3
        CidrBlock: 10.3.0.0/16

Resources:
  Network:
    Type: AWS::CloudFormation::Stack
    Properties:
      StackName: my-vpc
      TemplateURL: 'nested-template.yaml'
    Parameters:
      EnvType: !Ref EnvType
      RegionAzs: !FindInMap [Network, !Ref EnvType, NbAzs]
      CidrBlockPrefix: !FindInMap [Network, !Ref EnvType, CidrBlockPrefix]

  EcsCluster:
    Type: AWS::CloudFormation::Stack
    Properties:
      StackName: my-ecs
      TemplateURL: 'nested-template.yaml'
    Parameters:
      EnvType: !Ref EnvType
      VpcId: !GetAtt Network.Outputs.VpcId
      CidrBlockPrefix: !FindInMap [Network, !Ref EnvType, CidrBlockPrefix]

  LoadBalancing:
    Type: AWS::CloudFormation::Stack
    Properties:
      StackName: my-nlb
      TemplateURL: 'nested-template.yaml'
    Parameters:
      VpcId: !GetAtt Network.Outputs.VpcId
      PrivateSubnets: !GetAtt Network.Outputs.PrivateSubnets
      PrivateHostedZoneId: !GetAtt Network.Outputs.PrivateHostedZoneId

  DocumentDB:
    Type: AWS::CloudFormation::Stack
    DependsOn:
      - Encryption
    Properties:
      StackName: my-database
      TemplateURL: 'nested-template.yaml'
    Parameters:
      EnvType: !Ref EnvType
      PrivateSubnets: !GetAtt Network.Outputs.PrivateSubnets
      AvailabilityZones: !GetAtt Network.Outputs.AvailabilityZones
      EncryptionKeyId: !GetAtt Encryption.Outputs.EncryptionKeyId
      DBInstanceClass: !Ref DBInstanceClass
      isEnableDeletionProtection: !Ref isEnableDeletionProtection
      isEnableBackup: !Ref isEnableBackup
      VpcId: !GetAtt Network.Outputs.VpcId

  Encryption:
    Type: AWS::CloudFormation::Stack
    Properties:
      StackName: my-encryption-key
      TemplateURL: 'nested-template.yaml'
    Parameters:
      EnvType: !Ref EnvType

from aws-sam-cli.

Closing due to inactivity.

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