ConfigData.ps1

$ConfigurationData = @{
    AllNodes = @(
        @{
            Nodename = 'SRV01'
            Role = 'ServerType1_Application'
        },
        @{
            Nodename = 'SRV02'
            Role = 'ServerType2_Application'
        }
    )

    Roles = @{
        ServerType1_Application = @{
            Configurations = @('ServerType','Application')
            ServerType = @{
                # ServerType1 Data
            }
            Application = @{
                #Application Data
            }
        }

        ServerType2_Application = @{
            Configurations = @('ServerType','Application')
            ServerType = @{
                # ServerType1 Data
            }
            Application = @{
                #Application Data
            }
        }
    }
}

https://gist.github.com/gaelcolas/589b26a6d89bba432b07d55cce8c8c52#file-configdata-ps1-L27
Shouldn't that say ServerType2 Data?