diff --git a/apis/Google.Cloud.Billing.V1/Google.Cloud.Billing.V1/CloudBilling.g.cs b/apis/Google.Cloud.Billing.V1/Google.Cloud.Billing.V1/CloudBilling.g.cs
index 607a0f19ef1c..076eaeab21a7 100644
--- a/apis/Google.Cloud.Billing.V1/Google.Cloud.Billing.V1/CloudBilling.g.cs
+++ b/apis/Google.Cloud.Billing.V1/Google.Cloud.Billing.V1/CloudBilling.g.cs
@@ -1685,8 +1685,6 @@ public CreateBillingAccountRequest Clone() {
     /// <summary>
     /// Optional. The parent to create a billing account from.
     /// Format:
-    ///   - `organizations/{organization_id}`, for example,
-    ///     `organizations/12345678`
     ///   - `billingAccounts/{billing_account_id}`, for example,
     ///      `billingAccounts/012345-567890-ABCDEF`
     /// </summary>
diff --git a/apis/Google.Cloud.Billing.V1/Google.Cloud.Billing.V1/CloudBillingClient.g.cs b/apis/Google.Cloud.Billing.V1/Google.Cloud.Billing.V1/CloudBillingClient.g.cs
index 52836d98f2a6..352614b4bacf 100644
--- a/apis/Google.Cloud.Billing.V1/Google.Cloud.Billing.V1/CloudBillingClient.g.cs
+++ b/apis/Google.Cloud.Billing.V1/Google.Cloud.Billing.V1/CloudBillingClient.g.cs
@@ -1042,8 +1042,6 @@ public virtual BillingAccount CreateBillingAccount(BillingAccount billingAccount
         /// <param name="parent">
         /// Optional. The parent to create a billing account from.
         /// Format:
-        /// - `organizations/{organization_id}`, for example,
-        /// `organizations/12345678`
         /// - `billingAccounts/{billing_account_id}`, for example,
         /// `billingAccounts/012345-567890-ABCDEF`
         /// </param>
@@ -1082,8 +1080,6 @@ public virtual BillingAccount CreateBillingAccount(BillingAccount billingAccount
         /// <param name="parent">
         /// Optional. The parent to create a billing account from.
         /// Format:
-        /// - `organizations/{organization_id}`, for example,
-        /// `organizations/12345678`
         /// - `billingAccounts/{billing_account_id}`, for example,
         /// `billingAccounts/012345-567890-ABCDEF`
         /// </param>
@@ -1122,8 +1118,6 @@ public virtual BillingAccount CreateBillingAccount(BillingAccount billingAccount
         /// <param name="parent">
         /// Optional. The parent to create a billing account from.
         /// Format:
-        /// - `organizations/{organization_id}`, for example,
-        /// `organizations/12345678`
         /// - `billingAccounts/{billing_account_id}`, for example,
         /// `billingAccounts/012345-567890-ABCDEF`
         /// </param>