Google Cloud Platform not allowing project shut down due to lien

Question

I am trying to delete a GCP project, but each time I get a message that says:

Error
The project has a lien against it.

Tracking Number: 

Can anyone advise?

Answer 1

I fixed this problem by deleting a Dialogflow agent associated with the project:

1. Go to https://console.dialogflow.com
2. Click on settings item in the top left (the cog icon next to the agent name)
3. Confirm that this agent is in the project you are trying to delete. If it is not, select the agent that is in the project
4. Click 'Delete this Agent' at the bottom of the page, and follow the instructions to delete the agent
5. Try to delete the project again

Answer 2

Delete Dialogflow associated agent with the project as explained on previous solution.

If still failed, you could delete the project liens manually as follows:

1. Go to Google Cloud Shell & Set to your project.

@cloudshell:~ ($project)$gcloud config set project [PROJECT_ID]

2. Try to delete your project.

   @cloudshell:~ ($project)$ gcloud projects delete [PROJECT_ID]
   Your project will be deleted.

   Do you want to continue (Y/n)?  Y

   ERROR: (gcloud.projects.delete) FAILED_PRECONDITION: active child resource
   - '@type':type.googleapis.com/google.rpc.PreconditionFailure violations:
    description: active child resource
     subject: services/$service
   - '@type':type.googleapis.com/google.rpc.ResourceInfo
     resourceName: projects/$project
     resourceType: PROJECT

3. List Project liens

   @cloudshell:~ ($project)$gcloud alpha resource-manager liens list

   NAME                                                  ORIGIN            REASON
   p1061081023732-l3d8032b3-ea2c-4683-ad48-5ca23ddd00e7  user@example.com  testing

4. Delete Project liens

@cloudshell:~ ($project)$gcloud alpha resource-manager liens delete [LIEN_NAME]

5. Then again delete Project

@cloudshell:~ ($project)$ gcloud projects delete [PROJECT_ID]

The project should be deleted right now.