Could not delete old app version "An operation for the service binding between app ** and service instance ** is in progress."

[atmcourse-1]

Hello,
When I trying to cf blue-green-deploy --delete-old-apps -f manifest-dev.yml, this error popup.

Deleting app <app name> in org <org name> / space <space name> as <user>...
Could not delete old app version - Server error, status code: 502, error code: 150009, message: Deletion of app <app name-old> failed because one or more associated resources could not be deleted.

        An operation for the service binding between app <app name-old> and service instance <service binding> is in progress.

Here is the source code where the error raised:

// cloud_controller_ng/app/actions/mixins/bindings_delete.rb
def delete_bindings(bindings, user_audit_info:)
        type = nil
        binding_delete_action = nil

        bindings.each_with_object([]) do |binding, errors|
          type ||= DeleteServiceBindingFactory.type_of(binding)
          binding_delete_action ||= DeleteServiceBindingFactory.action(type, user_audit_info)

          result = binding_delete_action.delete(binding)
          unless result[:finished]
            polling_job = DeleteBindingJob.new(type, binding.guid, user_audit_info:)
            Jobs::Enqueuer.new(polling_job, queue: Jobs::Queues.generic).enqueue_pollable
            unbinding_operation_in_progress!(binding)
          end
        rescue StandardError => e
          errors << e
        end
end

// cloud_controller_ng/app/actions/app_delete.rb
def unbinding_operation_in_progress!(binding)
      raise AsyncBindingDeletionsTriggered.new(
        "An operation for the service binding between app #{binding.app.name} and service instance #{binding.service_instance.name} is in progress."
      )
end

// cf-blue-green-deploy/blue_green_deploy.go
func (p *BlueGreenDeploy) DeleteAppVersions(apps []plugin_models.GetAppsModel) {
	for _, app := range apps {
		if _, err := p.Connection.CliCommand("delete", app.Name, "-f", "-r"); err != nil {
			p.ErrorFunc("Could not delete old app version", err)
		}
	}
}

I think you should treat AsyncBindingDeletionsTriggered Error in a different way with others, cause this process is still on going. And this unbinding operation is successful on delay.

Thanks
Xuelong Bai