diff --git a/samples/interactive-tutorials/src/main/java/product/AddFulfillmentPlaces.java b/samples/interactive-tutorials/src/main/java/product/AddFulfillmentPlaces.java
index 2c6a63cc..d33562b2 100644
--- a/samples/interactive-tutorials/src/main/java/product/AddFulfillmentPlaces.java
+++ b/samples/interactive-tutorials/src/main/java/product/AddFulfillmentPlaces.java
@@ -56,6 +56,15 @@ public static void addFulfillmentPlaces(String productName, String placeId)
             .setAllowMissing(true)
             .build();
 
+    // To send an out-of-order request assign the invalid AddTime here:
+    // Instant instant = LocalDateTime.now().minusDays(1).toInstant(ZoneOffset.UTC);
+    // Timestamp previousDay = Timestamp.newBuilder()
+    //          .setSeconds(instant.getEpochSecond())
+    //          .setNanos(instant.getNano())
+    //          .build();
+    // addFulfillmentPlacesRequest =
+    // addFulfillmentPlacesRequest.toBuilder().setAddTime(previousDay).build();
+
     System.out.println("Add fulfillment request " + addFulfillmentPlacesRequest);
 
     // Initialize client that will be used to send requests. This client only
diff --git a/samples/interactive-tutorials/src/main/java/product/RemoveFulfillmentPlaces.java b/samples/interactive-tutorials/src/main/java/product/RemoveFulfillmentPlaces.java
index 35e7b8f0..eb8d23a0 100644
--- a/samples/interactive-tutorials/src/main/java/product/RemoveFulfillmentPlaces.java
+++ b/samples/interactive-tutorials/src/main/java/product/RemoveFulfillmentPlaces.java
@@ -57,6 +57,15 @@ public static void removeFulfillmentPlaces(String productName, String storeId)
             .setAllowMissing(true)
             .build();
 
+    // To send an out-of-order request assign the invalid RemoveTime here:
+    // Instant instant = LocalDateTime.now().minusDays(1).toInstant(ZoneOffset.UTC);
+    // Timestamp previousDay = Timestamp.newBuilder()
+    //          .setSeconds(instant.getEpochSecond())
+    //          .setNanos(instant.getNano())
+    //          .build();
+    // removeFulfillmentRequest =
+    // removeFulfillmentRequest.toBuilder().setRemoveTime(previousDay).build();
+
     System.out.println("Remove fulfillment request " + removeFulfillmentRequest);
 
     // Initialize client that will be used to send requests. This client only
diff --git a/samples/interactive-tutorials/src/main/java/product/SetInventory.java b/samples/interactive-tutorials/src/main/java/product/SetInventory.java
index 0a16d408..513ba27d 100644
--- a/samples/interactive-tutorials/src/main/java/product/SetInventory.java
+++ b/samples/interactive-tutorials/src/main/java/product/SetInventory.java
@@ -93,6 +93,14 @@ public static void setInventory(String productName) throws IOException, Interrup
             .build();
     System.out.printf("Set inventory request: %s%n", setInventoryRequest);
 
+    // To send an out-of-order request assign the invalid SetTime here:
+    // Instant instant = LocalDateTime.now().minusDays(1).toInstant(ZoneOffset.UTC);
+    // Timestamp previousDay = Timestamp.newBuilder()
+    //          .setSeconds(instant.getEpochSecond())
+    //          .setNanos(instant.getNano())
+    //          .build();
+    // setInventoryRequest = setInventoryRequest.toBuilder().setSetTime(previousDay).build();
+
     // Initialize client that will be used to send requests. This client only
     // needs to be created once, and can be reused for multiple requests. After
     // completing all of your requests, call the "close" method on the client to