为什么AzureRmWebAppDeploymen请求我的订阅,然后尝试将其用作服务连接?

pool:
  vmImage: 'Ubuntu 16.04'

variables:
  buildConfiguration: 'Release'

steps:
- script: dotnet build --configuration $(buildConfiguration)
  displayName: 'dotnet build $(buildConfiguration)'

- task: AzureRmWebAppDeployment@3
  inputs:
    azureSubscription: '<mysubscription>'
    WebAppName: 'mylinuxapi'
    Package: $(System.ArtifactsDirectory)/**/*.zip

订阅id在哪里

当我运行构建时,错误是

Job Job1:Step input azureSubscription references service connection
The service connection does not exist or has not been authorized for use. For authorization details, refer to https://aka.ms/yamlauthz.

我现在正试图找到如何添加新的服务端点