diff --git a/retail/interactive-tutorials/product/add-fulfillment-places.js b/retail/interactive-tutorials/product/add-fulfillment-places.js
index c92637a73d..edb138f3d0 100644
--- a/retail/interactive-tutorials/product/add-fulfillment-places.js
+++ b/retail/interactive-tutorials/product/add-fulfillment-places.js
@@ -27,23 +27,21 @@ async function main(generatedProductId) {
   // Create product
   const createdProduct = await utils.createProduct(
     projectId,
-    generatedProductId
+    generatedProductId,
+    true
   );
 
   // Full resource name of Product
   const product = createdProduct.name;
 
   // The fulfillment type, including commonly used types (such as
-  // pickup in store and same day delivery), and custom types.
+  // pickup in store and same-day delivery), and custom types.
   const type = 'same-day-delivery';
 
   // The IDs for this type, such as the store IDs for "pickup-in-store" or the region IDs for
   // "same-day-delivery" to be added for this type.
   const placeIds = ['store1', 'store2', 'store3'];
 
-  // The time when the fulfillment updates are issued, used to prevent
-  // out-of-order updates on fulfillment information.
-
   //If set to true, and the product is not found, the fulfillment information will still be processed and retained for
   // at most 1 day and processed once the product is created
   const allowMissing = true;
@@ -57,16 +55,18 @@ async function main(generatedProductId) {
       allowMissing,
     };
 
+    // To send an out-of-order request assign the invalid addTime here:
+    // request.addTime = {seconds: Math.round(Date.now() / 1000) - 86400};
+
     console.log('Add fulfillment request:', request);
+    console.log('Waiting to complete add operation...');
 
     // Run request
     const [operation] = await retailClient.addFulfillmentPlaces(request);
     await operation.promise();
-
-    console.log('Waiting to complete add operation..');
   };
 
-  // Add fulfillment places with current time
+  // Add fulfillment places
   console.log('Start add fulfillment');
   await calladdFulfillmentPlaces();
 
diff --git a/retail/interactive-tutorials/product/remove-fulfillment-places.js b/retail/interactive-tutorials/product/remove-fulfillment-places.js
index 8264fcceac..75adf40bbe 100644
--- a/retail/interactive-tutorials/product/remove-fulfillment-places.js
+++ b/retail/interactive-tutorials/product/remove-fulfillment-places.js
@@ -35,16 +35,13 @@ async function main(generatedProductId) {
   const product = createdProduct.name;
 
   // The fulfillment type, including commonly used types (such as
-  // pickup in store and same day delivery), and custom types.
+  // pickup in store and same-day delivery), and custom types.
   const type = 'same-day-delivery';
 
   // The IDs for this type, such as the store IDs for "pickup-in-store" or the region IDs for
   // "same-day-delivery" to be added for this type.
   const placeIds = ['store1'];
 
-  // The time when the fulfillment updates are issued, used to prevent
-  // out-of-order updates on fulfillment information.
-
   const callRemoveFulfillmentPlaces = async () => {
     // Construct request
     const request = {
@@ -53,15 +50,18 @@ async function main(generatedProductId) {
       placeIds,
     };
 
+    // To send an out-of-order request assign the invalid removeTime here:
+    // request.removeTime = {seconds: Math.round(Date.now() / 1000) - 86400};
+
     console.log('Remove fulfillment request:', request);
+    console.log('Waiting to complete remove operation...');
+
     // Run request
     const [operation] = await retailClient.removeFulfillmentPlaces(request);
     await operation.promise();
-
-    console.log('Waiting to complete remove operation..');
   };
 
-  // Remove fulfillment places with current time
+  // Remove fulfillment places
   console.log('Start remove fulfillment');
   await callRemoveFulfillmentPlaces();
 
diff --git a/retail/interactive-tutorials/product/set-inventory.js b/retail/interactive-tutorials/product/set-inventory.js
index 8f14f14ddb..f8e1295504 100644
--- a/retail/interactive-tutorials/product/set-inventory.js
+++ b/retail/interactive-tutorials/product/set-inventory.js
@@ -27,7 +27,8 @@ async function main(generatedProductId) {
   // Create product
   const createdProduct = await utils.createProduct(
     projectId,
-    generatedProductId
+    generatedProductId,
+    true
   );
 
   // The inventory information to update
@@ -52,9 +53,6 @@ async function main(generatedProductId) {
     availability: 'IN_STOCK',
   };
 
-  // The time when the request is issued, used to prevent
-  // out-of-order updates on inventory fields with the last update time recorded.
-
   // If set to true, and the product with name is not found, the
   // inventory update will still be processed and retained for at most 1 day until the product is created
   const allowMissing = true;
@@ -65,35 +63,29 @@ async function main(generatedProductId) {
       inventory: product,
       allowMissing,
     };
+
+    // To send an out-of-order request assign the invalid setTime here:
+    // request.setTime = {seconds: Math.round(Date.now() / 1000) - 86400};
+
     console.log('Set inventory request:', request);
+    console.log('Waiting to complete set inventory operation...');
 
     // Run request
     const [operation] = await retailClient.setInventory(request);
     await operation.promise();
-    console.log('Waiting to complete set inventory operation..');
   };
 
-  // Set inventory with current time
+  // Set inventory
   console.log('Start set inventory');
   await callSetInventory();
 
   // Get product
-  let changedProduct = await utils.getProduct(createdProduct.name);
+  const changedProduct = await utils.getProduct(createdProduct.name);
   console.log(
     `Updated product ${createdProduct.id} with current time: `,
     JSON.stringify(changedProduct[0])
   );
 
-  // Set inventory with outdated time
-  product.priceInfo.price = 20.0;
-  await callSetInventory();
-
-  // Get product
-  changedProduct = await utils.getProduct(createdProduct.name);
-  console.log(
-    `Updated product ${createdProduct.id} with outdated time: `,
-    JSON.stringify(changedProduct[0])
-  );
   console.log('Set inventory finished');
 
   // Delete product