(Terraform, GCP) Error 403: Permission iam.serviceAccounts.setIamPolicy is required to perform this operation on service account projects/myproject-17

Question

On GCP , I'm trying to add "Service Account 2" as a member to "Service Account 1" with this Terraform code below:

resource "google_service_account" "service_account_1" {
  display_name = "Service Account 1"
  account_id   = "service-account-1"
}

resource "google_service_account" "service_account_2" {
  display_name = "Service Account 2"
  account_id   = "service-account-2"
}

resource "google_service_account_iam_member" "service-account-iam_member" {
  service_account_id = google_service_account.service_account_1.name
  role               = "roles/iam.serviceAccountUser"
  member             = "serviceAccount:${google_service_account.service_account_2.email}"
  depends_on = [
    google_service_account.service_account_1,
    google_service_account.service_account_2
  ]
}

But I got this error below:

Error applying IAM policy for service account 'projects/myproject-173831/serviceAccounts/service-account-1@myproject-173831.iam.gserviceaccount.com': Error setting IAM policy for service account 'projects/myproject-173831/serviceAccounts/service-account-1@myproject-173831.iam.gserviceaccount.com': googleapi: Error 403: Permission iam.serviceAccounts.setIamPolicy is required to perform this operation on service account projects/myproject-173831/serviceAccounts/service-account-1@myproject-173831.iam.gserviceaccount.com., forbidden

So now, I'm trying to add a role to solve this error above but there are too many roles to choose:

What role do I need to choose?

Answer 1

You need to choose the role "Service Account Admin" to add "Service Account 2" as a member to "Service Account 1" :