update

src/main/java/com/ffii/fpsms/modules/pickOrder/service/PickExecutionIssueService.kt

@@ -144,7 +144,41 @@ open class PickExecutionIssueService(
             val missQty = request.missQty ?: BigDecimal.ZERO
             val badItemQty = request.badItemQty ?: BigDecimal.ZERO
             val badReason = request.badReason ?: "quantity_problem" 
-            
+            val stockOutLines = stockOutLineRepository
+                .findByPickOrderLineIdAndInventoryLotLineIdAndDeletedFalse(
+                    request.pickOrderLineId,
+                    request.lotId ?: 0L
+                )
+
+            val currentStatus = stockOutLines.firstOrNull()?.status ?: ""
+
+            if (currentStatus.equals("pending", ignoreCase = true)
+                && actualPickQty > BigDecimal.ZERO
+                && missQty == BigDecimal.ZERO
+                && badItemQty == BigDecimal.ZERO
+            ) {
+                return MessageResponse(
+                    id = null,
+                    name = "Invalid issue for pending stock out line",
+                    code = "ERROR",
+                    type = "pick_execution_issue",
+                    message = "Cannot submit only actual pick qty when stock out line is pending. Please rescan the lot or use normal pick flow.",
+                    errorPosition = null
+                )
+            }
+            val lotRemainAvailable = bookQty        // 当前 lot 剩余
+            val maxAllowed = requiredQty + lotRemainAvailable
+          
+            if (actualPickQty > maxAllowed) {
+                return MessageResponse(
+                    id = null,
+                    name = "Actual pick qty too large",
+                    code = "ERROR",
+                    type = "pick_execution_issue",
+                    message = "Actual pick qty cannot exceed required qty plus lot remaining available.",
+                    errorPosition = null
+                )
+            }
             println("=== Quantity Summary ===")
             println("  Required Qty: $requiredQty")
             println("  Actual Pick Qty: $actualPickQty")