diff --git a/samples/interactive-tutorials/README.md b/samples/interactive-tutorials/README.md
index 70fb2f3c..123abd84 100644
--- a/samples/interactive-tutorials/README.md
+++ b/samples/interactive-tutorials/README.md
@@ -72,16 +72,12 @@ To run a code sample from the Cloud Shell, you need to be authenticated using th
     export GOOGLE_APPLICATION_CREDENTIALS=~/key.json
     ```
 
-### Set the GOOGLE_CLOUD_PROJECT_NUMBER and GOOGLE_CLOUD_PROJECT environment variables
+### Set the GOOGLE_CLOUD_PROJECT environment variable
 
-You will run the code samples in your own Google Cloud project. To use the **project_number** and **project_id** in every request to the Retail API, you should first specify them as environment variables.
+You will run the code samples in your own Google Cloud project. To use the **project_id** in every request to the Retail API, you should first specify them as environment variables.
 
-1. Find the project number and project ID in the Project Info card displayed on **Home/Dashboard**.
+1. Find the project ID in the Project Info card displayed on **Home/Dashboard**.
 
-1. Set the **project_number** with the following command:
-    ```bash
-    export GOOGLE_CLOUD_PROJECT_NUMBER=<YOUR_PROJECT_NUMBER>
-    ```
 1. Set the **project_id** with the following command:
     ```bash
     export GOOGLE_CLOUD_PROJECT=<YOUR_PROJECT_ID>
diff --git a/samples/interactive-tutorials/TEST_RESOURCES_SETUP_CLEANUP.md b/samples/interactive-tutorials/TEST_RESOURCES_SETUP_CLEANUP.md
index 89b1cf13..772257f8 100644
--- a/samples/interactive-tutorials/TEST_RESOURCES_SETUP_CLEANUP.md
+++ b/samples/interactive-tutorials/TEST_RESOURCES_SETUP_CLEANUP.md
@@ -3,7 +3,6 @@
 ## Required environment variables
 
 To successfully import the catalog data for tests, the following environment variables should be set:
- - GOOGLE_CLOUD_PROJECT_NUMBER
  - GOOGLE_CLOUD_PROJECT 
  - BUCKET_NAME
  - EVENTS_BUCKET_NAME
diff --git a/samples/interactive-tutorials/product/import_products_inline_source.py b/samples/interactive-tutorials/product/import_products_inline_source.py
index f0fbeef0..f0b952d4 100644
--- a/samples/interactive-tutorials/product/import_products_inline_source.py
+++ b/samples/interactive-tutorials/product/import_products_inline_source.py
@@ -32,7 +32,7 @@
 )
 from google.protobuf.field_mask_pb2 import FieldMask
 
-# Read the project number from the environment variable
+# Read the project ID from the environment variable
 project_id = os.environ["GOOGLE_CLOUD_PROJECT"]
 
 default_catalog = f"projects/{project_id}/locations/global/catalogs/default_catalog/branches/default_branch"
diff --git a/samples/interactive-tutorials/search/search_simple_query.py b/samples/interactive-tutorials/search/search_simple_query.py
index f145dd1d..30a69b85 100644
--- a/samples/interactive-tutorials/search/search_simple_query.py
+++ b/samples/interactive-tutorials/search/search_simple_query.py
@@ -19,14 +19,14 @@
 
 from google.cloud.retail import SearchRequest, SearchServiceClient
 
-project_number = os.environ["GOOGLE_CLOUD_PROJECT_NUMBER"]
+project_id = os.environ["GOOGLE_CLOUD_PROJECT"]
 
 
 # get search service request:
 def get_search_request(query: str):
     default_search_placement = (
         "projects/"
-        + project_number
+        + project_id
         + "/locations/global/catalogs/default_catalog/placements/default_search"
     )
 
diff --git a/samples/interactive-tutorials/search/search_with_boost_spec.py b/samples/interactive-tutorials/search/search_with_boost_spec.py
index 10495b3e..d41063d5 100644
--- a/samples/interactive-tutorials/search/search_with_boost_spec.py
+++ b/samples/interactive-tutorials/search/search_with_boost_spec.py
@@ -20,14 +20,14 @@
 
 from google.cloud.retail import SearchRequest, SearchServiceClient
 
-project_number = os.environ["GOOGLE_CLOUD_PROJECT_NUMBER"]
+project_id = os.environ["GOOGLE_CLOUD_PROJECT"]
 
 
 # get search service request:
 def get_search_request(query: str, condition: str, boost_strength: float):
     default_search_placement = (
         "projects/"
-        + project_number
+        + project_id
         + "/locations/global/catalogs/default_catalog/placements/default_search"
     )
 
diff --git a/samples/interactive-tutorials/search/search_with_facet_spec.py b/samples/interactive-tutorials/search/search_with_facet_spec.py
index 95863180..fb850b10 100644
--- a/samples/interactive-tutorials/search/search_with_facet_spec.py
+++ b/samples/interactive-tutorials/search/search_with_facet_spec.py
@@ -18,14 +18,14 @@
 
 from google.cloud.retail import SearchRequest, SearchServiceClient
 
-project_number = os.environ["GOOGLE_CLOUD_PROJECT_NUMBER"]
+project_id = os.environ["GOOGLE_CLOUD_PROJECT"]
 
 
 # get search service request:
 def get_search_request(query: str, facet_key_param: str):
     default_search_placement = (
         "projects/"
-        + project_number
+        + project_id
         + "/locations/global/catalogs/default_catalog/placements/default_search"
     )
     # PUT THE INTERVALS HERE:
diff --git a/samples/interactive-tutorials/search/search_with_filtering.py b/samples/interactive-tutorials/search/search_with_filtering.py
index fd14f871..d9c40a56 100644
--- a/samples/interactive-tutorials/search/search_with_filtering.py
+++ b/samples/interactive-tutorials/search/search_with_filtering.py
@@ -19,14 +19,14 @@
 
 from google.cloud.retail import SearchRequest, SearchServiceClient
 
-project_number = os.environ["GOOGLE_CLOUD_PROJECT_NUMBER"]
+project_id = os.environ["GOOGLE_CLOUD_PROJECT"]
 
 
 # get search service request:
 def get_search_request(query: str, _filter: str):
     default_search_placement = (
         "projects/"
-        + project_number
+        + project_id
         + "/locations/global/catalogs/default_catalog/placements/default_search"
     )
 
diff --git a/samples/interactive-tutorials/search/search_with_ordering.py b/samples/interactive-tutorials/search/search_with_ordering.py
index 85a7ee0e..0863c44a 100644
--- a/samples/interactive-tutorials/search/search_with_ordering.py
+++ b/samples/interactive-tutorials/search/search_with_ordering.py
@@ -19,14 +19,14 @@
 
 from google.cloud.retail import SearchRequest, SearchServiceClient
 
-project_number = os.environ["GOOGLE_CLOUD_PROJECT_NUMBER"]
+project_id = os.environ["GOOGLE_CLOUD_PROJECT"]
 
 
 # get search service request:
 def get_search_request(query: str, order: str):
     default_search_placement = (
         "projects/"
-        + project_number
+        + project_id
         + "/locations/global/catalogs/default_catalog/placements/default_search"
     )
 
diff --git a/samples/interactive-tutorials/search/search_with_pagination.py b/samples/interactive-tutorials/search/search_with_pagination.py
index a8160475..994797e7 100644
--- a/samples/interactive-tutorials/search/search_with_pagination.py
+++ b/samples/interactive-tutorials/search/search_with_pagination.py
@@ -21,14 +21,14 @@
 
 from google.cloud.retail import SearchRequest, SearchServiceClient
 
-project_number = os.environ["GOOGLE_CLOUD_PROJECT_NUMBER"]
+project_id = os.environ["GOOGLE_CLOUD_PROJECT"]
 
 
 # get search service request:
 def get_search_request(query: str, page_size: int, offset: int, next_page_token: str):
     default_search_placement = (
         "projects/"
-        + project_number
+        + project_id
         + "/locations/global/catalogs/default_catalog/placements/default_search"
     )
 
diff --git a/samples/interactive-tutorials/search/search_with_query_expansion_spec.py b/samples/interactive-tutorials/search/search_with_query_expansion_spec.py
index f530a7c9..a21287b8 100644
--- a/samples/interactive-tutorials/search/search_with_query_expansion_spec.py
+++ b/samples/interactive-tutorials/search/search_with_query_expansion_spec.py
@@ -20,7 +20,7 @@
 
 from google.cloud.retail import SearchRequest, SearchServiceClient
 
-project_number = os.environ["GOOGLE_CLOUD_PROJECT_NUMBER"]
+project_id = os.environ["GOOGLE_CLOUD_PROJECT"]
 
 
 # get search service request:
@@ -29,7 +29,7 @@ def get_search_request(
 ):
     default_search_placement = (
         "projects/"
-        + project_number
+        + project_id
         + "/locations/global/catalogs/default_catalog/placements/default_search"
     )
 
diff --git a/samples/interactive-tutorials/test_resources_recovery/create_test_resources.py b/samples/interactive-tutorials/test_resources_recovery/create_test_resources.py
index c8822075..715d0163 100644
--- a/samples/interactive-tutorials/test_resources_recovery/create_test_resources.py
+++ b/samples/interactive-tutorials/test_resources_recovery/create_test_resources.py
@@ -24,7 +24,6 @@
 from google.cloud.retail import ProductServiceClient
 from google.cloud.storage.bucket import Bucket
 
-project_number = os.environ["GOOGLE_CLOUD_PROJECT_NUMBER"]
 products_bucket_name = os.environ['BUCKET_NAME']
 events_bucket_name = os.environ['EVENTS_BUCKET_NAME']
 project_id = os.environ["GOOGLE_CLOUD_PROJECT"]
@@ -40,7 +39,7 @@
 events_schema = "../resources/events_schema.json"
 
 object_name = re.search('resources/(.*?)$', product_resource_file).group(1)
-default_catalog = f"projects/{project_number}/locations/global/catalogs/default_catalog/branches/default_branch"
+default_catalog = f"projects/{project_id}/locations/global/catalogs/default_catalog/branches/default_branch"
 
 storage_client = storage.Client()
 
diff --git a/samples/interactive-tutorials/test_resources_recovery/remove_test_resources.py b/samples/interactive-tutorials/test_resources_recovery/remove_test_resources.py
index a82cc67d..a025f3f3 100644
--- a/samples/interactive-tutorials/test_resources_recovery/remove_test_resources.py
+++ b/samples/interactive-tutorials/test_resources_recovery/remove_test_resources.py
@@ -23,7 +23,6 @@
 from google.cloud.storage.bucket import Bucket
 
 
-project_number = os.environ["GOOGLE_CLOUD_PROJECT_NUMBER"]
 project_id = os.environ["GOOGLE_CLOUD_PROJECT"]
 product_bucket_name = os.environ['BUCKET_NAME']
 events_bucket_name = os.environ['EVENTS_BUCKET_NAME']
@@ -31,7 +30,7 @@
 product_dataset = "products"
 events_dataset = "user_events"
 
-default_catalog = f"projects/{project_number}/locations/global/catalogs/default_catalog/branches/default_branch"
+default_catalog = f"projects/{project_id}/locations/global/catalogs/default_catalog/branches/default_branch"
 
 storage_client = storage.Client()