Add procedure for manually adding the Terraform SA as Billing Account User on billing (in addition to IAM) to proceed with project/billing association

[fmichaelobrien]

If you get the following it means your Terraform SA (Service Account) is not on the BAU (Billing Account User) list in billing for the BID (Billing ID) Option is to pre-create the TF SA

Error: failed pre-requisites: missing permission on "billingAccounts/0........": billing.resourceAssociations.create
│
│   with module.administration.module.project-factory.google_project.main,
│   on .terraform/modules/administration/modules/core_project_factory/main.tf line 65, in resource "google_project" "main":
│   65: resource "google_project" "main" {

[fmichaelobrien]

see https://github.com/GoogleCloudPlatform/pbmm-on-gcp-onboarding/issues/213

[fmichaelobrien]

Terraform Service Account missing on shared billing account as Billing Account User

Add the TF SA

All good