diff --git a/api-specs/api/types/product-selection/ProductSelectionAssignment.raml b/api-specs/api/types/product-selection/ProductSelectionAssignment.raml
index e327e5cb8..e2a8dd07a 100644
--- a/api-specs/api/types/product-selection/ProductSelectionAssignment.raml
+++ b/api-specs/api/types/product-selection/ProductSelectionAssignment.raml
@@ -20,14 +20,16 @@ properties:
   variantSelection?:
     type: ProductVariantSelection
     description: |
-      Define which Variants of the added Product will be included in the Product Selection.
+      Defines which particular Variants of the Product are included in the Product Selection.
+      If undefined all Variants of the referenced Product are included.
 
       This field is only available for assignments to a Product Selection with `Individual` [ProductSelectionMode](ctp:api:type:ProductSelectionMode).
       The list of SKUs will be updated automatically on any change of those performed on the respective Product itself.
   variantExclusion?:
     type: ProductVariantExclusion
     description: |
-      Defines which Variants of the Product will be excluded from the Product Selection.
+      Defines which particular Variants of the Product are excluded from the Product Selection.
+      If undefined all Variants of the referenced Product are excluded.
 
       This field is only available for assignments to a Product Selection with `IndividualExclusion` [ProductSelectionMode](ctp:api:type:ProductSelectionMode).
       The list of SKUs will be updated automatically on any change of those performed on the respective Product itself.