Updated API from documentation release

Author: ct-sdks[bot]

api-specs/import/types/error.raml

@@ -220,6 +220,16 @@ types:
   GenericError:
     type: ErrorObject
     discriminatorValue: Generic
+  NewMasterVariantAdditionNotAllowedError:
+    description: |
+      Returned when attempting to create a ProductVariant and set it as the Master Variant in the same [ProductVariantImport](ctp:import:type:ProductVariantImport).
+    type: ErrorObject
+    discriminatorValue: NewMasterVariantAdditionNotAllowed
+    properties:
+      message:
+        type: string
+        description: |
+          `"Adding a new variant as master variant is not allowed."`
   ReferencedResourceNotFound:
     type: ErrorObject
     displayName: ReferencedResourceNotFoundError

api-specs/import/types/product-variant-import.raml

@@ -218,7 +218,8 @@ types:
         type: string
       isMasterVariant:
         description: |
-          Maps to `ProductVariant.isMasterVariant`.
+          - When creating a new ProductVariant, set to `false`; otherwise, the import operation will fail with a [NewMasterVariantAdditionNotAllowed](/error#newmastervariantadditionnotallowederror) error.
+          - Set to `true` if the ProductVariant exists and you want to set this ProductVariant as the Master Variant.
         type: boolean
       attributes?:
         description: |