diff --git a/modules/purchase_trade/stock.py b/modules/purchase_trade/stock.py
index 85f627d..c1fe603 100755
--- a/modules/purchase_trade/stock.py
+++ b/modules/purchase_trade/stock.py
@@ -804,7 +804,8 @@ class ShipmentIn(metaclass=PoolMeta):
                             "FeeUnitPrice": float(fee.price),
                             "ContractNumbers": sh.number,
                             "OrderQuantityGW": float(sh.get_quantity()) if sh.get_quantity() else float(1),
-                            "NumberOfPackingBales": int(fee.quantity) if fee.quantity else int(1)
+                            "NumberOfPackingBales": int(fee.quantity) if fee.quantity else int(1),
+                            "ChunkKeyList": sh.get_chunk_key()
                         }
 
                         logger.info("PAYLOAD:%s",so_payload)
@@ -857,6 +858,10 @@ class ShipmentIn(metaclass=PoolMeta):
     def default_dashboard(cls):
         return 1
 
+    def get_chunk_key(self):
+        keys = [m.lot.lot_chunk_key for m in self.incoming_moves if m.lot]
+        return ",".join(map(str, keys)) if keys else None
+
     def get_quantity(self,name=None):
         if self.incoming_moves:
             return sum([(e.quantity if e.quantity else 0) for e in self.incoming_moves])