create a harness aws ccm connector for your master payer with terraform

aws.tf

terraform {
  required_providers {
    harness = {
      source = "harness/harness"
    }
  }
}

provider "harness" {}

resource "harness_platform_connector_awscc" "master_payer" {
  identifier = "master_payer"
  name       = "master_payer"

  account_id  = "<master payer account id>"
  report_name = "<name of CUR>"
  s3_bucket   = "<s3 bucket name in which the CUR data is being delivered>"
  features_enabled = [
    "BILLING",
  ]
  cross_account_access {
    role_arn    = "<aws iam role arn you created to give harness access to cur data>"
    external_id = "<external id you used when creating the aws role for harness>"
  }
}