diff --git a/src/main/java/com/ffii/fpsms/modules/deliveryOrder/service/DoWorkbenchDopoAssignmentService.kt b/src/main/java/com/ffii/fpsms/modules/deliveryOrder/service/DoWorkbenchDopoAssignmentService.kt
index 6e795c4..f5ffc57 100644
--- a/src/main/java/com/ffii/fpsms/modules/deliveryOrder/service/DoWorkbenchDopoAssignmentService.kt
+++ b/src/main/java/com/ffii/fpsms/modules/deliveryOrder/service/DoWorkbenchDopoAssignmentService.kt
@@ -110,7 +110,7 @@ open class DoWorkbenchDopoAssignmentService(
             "4/F" -> "4/F"
             else -> request.storeId
         }
-        println("    DEBUG: assignByLaneForWorkbench storeId=$actualStoreId date=${request.requiredDate} lane=${request.truckLanceCode} dep=${request.truckDepartureTime}")
+        println("    DEBUG: assignByLaneForWorkbench storeId=$actualStoreId date=${request.requiredDate} lane=${request.truckLanceCode} dep=${request.truckDepartureTime} seq=${request.loadingSequence}")
 
         val params = mutableMapOf<String, Any>(
             "storeId" to actualStoreId,
@@ -140,6 +140,10 @@ open class DoWorkbenchDopoAssignmentService(
             sql.append(" AND dop.truckDepartureTime = :depTime ")
             params["depTime"] = depSqlTime
         }
+        if (request.loadingSequence != null) {
+            sql.append(" AND dop.loadingSequence = :loadingSequence ")
+            params["loadingSequence"] = request.loadingSequence
+        }
         // Fetch a batch of candidates and try atomic-assign sequentially.
         // This avoids forcing the frontend to refresh when a single picked candidate is concurrently assigned.
         val candidateLimit = 50
@@ -205,7 +209,7 @@ open class DoWorkbenchDopoAssignmentService(
             "4/F" -> "4/F"
             else -> request.storeId
         }
-        println("    DEBUG: assignByLaneForWorkbenchV1 storeId=$actualStoreId date=${request.requiredDate} lane=${request.truckLanceCode} dep=${request.truckDepartureTime}")
+        println("    DEBUG: assignByLaneForWorkbenchV1 storeId=$actualStoreId date=${request.requiredDate} lane=${request.truckLanceCode} dep=${request.truckDepartureTime} seq=${request.loadingSequence}")
 
         val params = mutableMapOf<String, Any>(
             "storeId" to actualStoreId,
@@ -234,6 +238,10 @@ open class DoWorkbenchDopoAssignmentService(
             sql.append(" AND dop.truckDepartureTime = :depTime ")
             params["depTime"] = depSqlTime
         }
+        if (request.loadingSequence != null) {
+            sql.append(" AND dop.loadingSequence = :loadingSequence ")
+            params["loadingSequence"] = request.loadingSequence
+        }
         sql.append(" ORDER BY dop.requiredDeliveryDate ASC, dop.truckDepartureTime ASC, dop.id ASC LIMIT 1 ")
 
         val candidates = try {