diff --git a/open-api/open-api-model/src/main/resources/3d-api.yaml b/open-api/open-api-model/src/main/resources/3d-api.yaml
index 4fa45b01..638fa447 100644
--- a/open-api/open-api-model/src/main/resources/3d-api.yaml
+++ b/open-api/open-api-model/src/main/resources/3d-api.yaml
@@ -27,99 +27,6 @@ paths:
 
 components:
   schemas:
-    StackValue:
-      type: object
-      discriminator:
-        propertyName: stackableValueType
-        mapping:
-          box: "#/components/schemas/BoxStackValue"
-          container: "#/components/schemas/ContainerStackValue"      
-      properties:
-        dx:
-          type: integer
-        dy:
-          type: integer
-        dz:
-          type: integer
-    Stackable:
-      type: object
-      discriminator:
-        propertyName: stackableType
-        mapping:
-          box: "#/components/schemas/Box"
-          container: "#/components/schemas/Container"
-      properties:
-        id:
-          type: string
-        description:
-          type: string
-    ContainerStackValue:
-      allOf:
-        - $ref: "#/components/schemas/StackValue"
-        - type: object    
-          properties:
-            minLoadWeight:
-              type: integer
-            maxLoadWeight:
-              type: integer
-            loadDx:
-              type: integer
-            loadDy:
-              type: integer
-            loadDz:
-              type: integer
-    Container:
-      allOf:
-        - $ref: "#/components/schemas/Stackable"
-        - type: object    
-          properties:
-            emptyWeight:
-              type: integer
-            stackableSize:
-              $ref: '#/components/schemas/ContainerStackableSize'
-            cost:
-              type: integer
-
-    ContainerItem:
-      allOf:
-        - $ref: "#/components/schemas/StackableItem"
-        - type: object    
-          properties:
-            container:
-              $ref: '#/components/schemas/Container'        
-
-    BoxStackValue:
-       allOf: # Combines the BasicErrorModel and the inline model
-        - $ref: "#/components/schemas/StackValue"
-        
-    Box:
-      allOf:
-        - $ref: "#/components/schemas/Stackable"
-        - type: object    
-          properties:
-            weight:
-              type: integer
-            size:
-              $ref: '#/components/schemas/BoxStackableSize'
-
-    StackableItem:
-      type: object
-      discriminator:
-        propertyName: stackableType
-        mapping:
-          box: "#/components/schemas/BoxItem"
-          container: "#/components/schemas/ContainerItem"      
-      properties:
-        count:
-          type: integer
-
-    BoxItem:
-      allOf:
-        - $ref: "#/components/schemas/StackableItem"
-        - type: object    
-          properties:
-            box:
-              $ref: '#/components/schemas/Box'
 
     Surface:
       type: string
@@ -144,14 +51,52 @@ components:
         - bottomAtNinetyDegrees
         - all
 
-    StackableSize:
+    PackedContainer:
+      type: object
+      properties:
+        id:
+          type: string
+        dx:
+          type: integer
+        dy:
+          type: integer
+        dz:
+          type: integer
+        weight:
+          type: integer
+
+    PackedBox:
+      type: object
+      properties:
+        id:
+          type: string
+        x:
+          type: integer
+        y:
+          type: integer
+        z:
+          type: integer
+        dx:
+          type: integer
+        dy:
+          type: integer
+        dz:
+          type: integer
+        weight:
+          type: integer
+
+    Stackable:
       type: object
       discriminator:
         propertyName: stackableSizeType
         mapping:
-          box: "#/components/schemas/BoxStackableSize"
-          container: "#/components/schemas/ContainerStackableSize"      
+          box: "#/components/schemas/Box"
+          container: "#/components/schemas/Container"      
       properties:
+        id:
+          type: string
+        description:
+          type: string
         dx:
           type: integer
         dy:
@@ -163,13 +108,17 @@ components:
           items: 
             $ref: '#/components/schemas/Surface'
 
-    BoxStackableSize:
+    Box:
        allOf:
-        - $ref: "#/components/schemas/StackableSize"
+        - $ref: "#/components/schemas/Stackable"
+        - type: object    
+          properties:
+            weight:
+              type: integer
 
-    ContainerStackableSize:
+    Container:
        allOf:
-        - $ref: "#/components/schemas/StackableSize"
+        - $ref: "#/components/schemas/Stackable"
         - type: object    
           properties:
             loadDx:
@@ -182,44 +131,53 @@ components:
               type: integer
             maxLoadWeight:
               type: integer
-
-    StackPlacement:
+            emptyWeight:
+              type: integer
+              
+    StackableItem:
       type: object
+      discriminator:
+        propertyName: stackableType
+        mapping:
+          box: "#/components/schemas/BoxItem"
+          container: "#/components/schemas/ContainerItem"      
       properties:
-        stackable:
-          $ref: '#/components/schemas/Box'
-        stackValue:
-          $ref: '#/components/schemas/BoxStackValue'
-        x:
-          type: integer
-        y:
+        count:
           type: integer
-        z:
-          type: integer            
+
+    ContainerItem:
+      allOf:
+        - $ref: "#/components/schemas/StackableItem"
+        - type: object    
+          properties:
+            container:
+              $ref: '#/components/schemas/Container'    
+
+    BoxItem:
+      allOf:
+        - $ref: "#/components/schemas/StackableItem"
+        - type: object    
+          properties:
+            box:
+              $ref: '#/components/schemas/Box'
+
     Packager:
       type: object
       properties:
         id:
           type: string
-        maxDuration:
+        maxDurationInPercent:
           type: integer
-    Stack:
+          
+    PackResult:
       type: object
       properties:
-        placements:
+        container:
+          $ref: '#/components/schemas/PackedContainer'
+        boxes:
           type: array
           items:
-            $ref: '#/components/schemas/StackPlacement'
-
-    PackResult:
-      type: object
-      properties:
-        id:
-          type: string
-        stack:
-          $ref: '#/components/schemas/Stack'
-        stackValue:
-          $ref: '#/components/schemas/ContainerStackValue'
+            $ref: '#/components/schemas/PackedBox'
 
     PackResponse:
       type: object