diff --git a/api-specs/api/resources/customers.raml b/api-specs/api/resources/customers.raml
index 312e2a275..4f1582ff1 100644
--- a/api-specs/api/resources/customers.raml
+++ b/api-specs/api/resources/customers.raml
@@ -239,7 +239,8 @@ post:
     displayName: Search Customers
     securedBy: [oauth_2_0: { scopes: ['view_customers:{projectKey}'] }]
     description: |
-      A [SearchNotReady](ctp:api:type:SearchNotReadyError) error is returned if the indexing is in progress or the feature is deactivated. If deactivated, you can [reactivate](/../api/projects/customer-search#reactivate) it.
+      If the initial indexing is in progress or the feature is inactive, a [SearchNotReady](ctp:api:type:SearchNotReadyError) error is returned.
+      If inactive, you can [reactivate](/../api/projects/customer-search#reactivate) it.
     body:
       application/json:
         type: CustomerSearchRequest
@@ -252,7 +253,7 @@ post:
     securedBy: [oauth_2_0: { scopes: ['view_customers:{projectKey}'] }]
     description: |
       Checks whether a search index of Customers exists for a Project.
-      If an index exists, a `200 OK` is returned; otherwise, a `409 Conflict`.
+      Returns a `200 OK` if an index exists; otherwise, returns a `409 Conflict`.
     responses:
       200:
         description: A search index exists and the [Search Customers](ctp:api:endpoint:/{projectKey}/customers/search:POST) endpoint is fully operational.
diff --git a/api-specs/api/resources/products.raml b/api-specs/api/resources/products.raml
index 5ec569c07..0d69f4c4f 100644
--- a/api-specs/api/resources/products.raml
+++ b/api-specs/api/resources/products.raml
@@ -260,6 +260,9 @@ post:
   post:
     displayName: Search Products
     securedBy: [oauth_2_0: { scopes: ['view_published_products:{projectKey}'] }]
+    description: |
+      If the indexing is in progress or the feature is inactive, an [ObjectNotFound](ctp:api:type:ObjectNotFoundError) error is returned.
+      If inactive, you can [reactivate](/../api/projects/product-search#activation-of-the-feature) it.
     body:
       application/json:
         type: ProductSearchRequest
diff --git a/api-specs/api/types/error/ObjectNotFoundError.raml b/api-specs/api/types/error/ObjectNotFoundError.raml
index 4c4c6a392..377a29eb4 100644
--- a/api-specs/api/types/error/ObjectNotFoundError.raml
+++ b/api-specs/api/types/error/ObjectNotFoundError.raml
@@ -4,11 +4,13 @@ type: ErrorObject
 displayName: ObjectNotFoundError
 discriminatorValue: ObjectNotFound
 description: |
-  Returned when the requested resource was not found.
+  Returned if the requested resource was not found or the Product Search index is [inactive](/../api/projects/product-search#activation-of-the-feature).
 properties:
   code:
     type: string
   message:
     type: string
     description: |
-      `"A $resourceType with identifier $id was unexpectedly not found."`
+      `"A $resourceType with identifier $id was unexpectedly not found."` or
+
+      `"No index found for project"`
diff --git a/api-specs/api/types/error/graphql/GraphQLObjectNotFoundError.raml b/api-specs/api/types/error/graphql/GraphQLObjectNotFoundError.raml
index 8b3f68b8b..f4eba88ed 100644
--- a/api-specs/api/types/error/graphql/GraphQLObjectNotFoundError.raml
+++ b/api-specs/api/types/error/graphql/GraphQLObjectNotFoundError.raml
@@ -4,7 +4,7 @@ type: GraphQLErrorObject
 displayName: GraphQLObjectNotFoundError
 discriminatorValue: ObjectNotFound
 description: |
-  Returned when the requested resource was not found.
+  Returned if the requested resource was not found or the Product Search index is [inactive](/../api/projects/product-search#activation-of-the-feature).
 properties:
   code:
     type: string