Account creation via CustomerService gained policy error codes and quota limits from March 17, 2025

Manager accounts below spend or active-child thresholds, or flagged for account-creation policy violations, can no longer create child accounts through CustomerService.CreateCustomerClient; v19 returns dedicated CustomerError codes while older versions return ContextError.OPERATION_NOT_PERMITTED_FOR_CONTEXT, and QuotaError.RESOURCE_EXHAUSTED enforces account creation limits.