diff --git a/src/main/java/com/ffii/fpsms/modules/master/service/ItemUomService.kt b/src/main/java/com/ffii/fpsms/modules/master/service/ItemUomService.kt
index e8ecaf1..06f9fd9 100644
--- a/src/main/java/com/ffii/fpsms/modules/master/service/ItemUomService.kt
+++ b/src/main/java/com/ffii/fpsms/modules/master/service/ItemUomService.kt
@@ -97,6 +97,29 @@ open class ItemUomService(
         return stockQty.setScale(0, RoundingMode.UP)
     }
 
+    /**
+     * Convert purchase qty -> stock qty (PO display / acceptedQty calculation)
+     * with round-down to integer stock qty.
+     */
+    open fun convertPurchaseQtyToStockQtyRoundDown(itemId: Long, purchaseQty: BigDecimal): BigDecimal {
+        val purchaseUnit = findPurchaseUnitByItemId(itemId) ?: return purchaseQty
+        val stockUnit = findStockUnitByItemId(itemId) ?: return purchaseQty
+        val one = BigDecimal.ONE
+
+        // Use high precision for intermediate steps, and round down only at the end.
+        val calcScale = 10
+
+        val baseQty = purchaseQty
+            .multiply(purchaseUnit.ratioN ?: one)
+            .divide(purchaseUnit.ratioD ?: one, calcScale, RoundingMode.HALF_UP)
+
+        val stockQty = baseQty
+            .multiply(stockUnit.ratioD ?: one)
+            .divide(stockUnit.ratioN ?: one, calcScale, RoundingMode.HALF_UP)
+
+        return stockQty.setScale(0, RoundingMode.DOWN)
+    }
+
     /** Inverse of convertPurchaseQtyToStockQty: stock qty -> purchase qty (for PO-origin StockInLine display). */
     open fun convertStockQtyToPurchaseQty(itemId: Long, stockQty: BigDecimal): BigDecimal {
         val purchaseUnit = findPurchaseUnitByItemId(itemId) ?: return stockQty
diff --git a/src/main/java/com/ffii/fpsms/modules/report/service/ItemQcFailReportService.kt b/src/main/java/com/ffii/fpsms/modules/report/service/ItemQcFailReportService.kt
index ac7bbd4..ff49878 100644
--- a/src/main/java/com/ffii/fpsms/modules/report/service/ItemQcFailReportService.kt
+++ b/src/main/java/com/ffii/fpsms/modules/report/service/ItemQcFailReportService.kt
@@ -143,13 +143,7 @@ open class ItemQcFailReportService(
                 COALESCE(qi.code, '')
         """.trimIndent()
         val result = jdbcDao.queryForList(sql, args)
-        println("qcTemplate: ${result[0]["qcTemplate"]}")
-        println("qcDefectCriteria: ${result[0]["qcDefectCriteria"]}")
-        println("lotQty: ${result[0]["lotQty"]}")
-        println("defectQty: ${result[0]["defectQty"]}")
-        println("refData: ${result[0]["refData"]}")
-        println("remark: ${result[0]["remark"]}")
-        println("orderRefNo: ${result[0]["orderRefNo"]}")
+
         return result
     }
 
diff --git a/src/main/java/com/ffii/fpsms/modules/stock/entity/projection/StockInLineInfo.kt b/src/main/java/com/ffii/fpsms/modules/stock/entity/projection/StockInLineInfo.kt
index 40671be..2aff3bd 100644
--- a/src/main/java/com/ffii/fpsms/modules/stock/entity/projection/StockInLineInfo.kt
+++ b/src/main/java/com/ffii/fpsms/modules/stock/entity/projection/StockInLineInfo.kt
@@ -28,7 +28,7 @@ interface StockInLineInfo {
     val receivedQty: BigDecimal?
     val demandQty: BigDecimal?
     val acceptedQty: BigDecimal
-    @get:Value("#{target.purchaseOrderLine != null && target.item != null && target.acceptedQty != null ? @itemUomService.convertStockQtyToPurchaseQty(target.item.id, target.acceptedQty) : null}")
+    @get:Value("#{target.acceptedQtyM18 != null ? new java.math.BigDecimal(target.acceptedQtyM18) : null}")
     val purchaseAcceptedQty: BigDecimal?
     @get:Value("#{target.purchaseOrderLine?.qty}")
     val qty: BigDecimal?
diff --git a/src/main/java/com/ffii/fpsms/modules/stock/service/StockInLineService.kt b/src/main/java/com/ffii/fpsms/modules/stock/service/StockInLineService.kt
index 038136a..4419cf2 100644
--- a/src/main/java/com/ffii/fpsms/modules/stock/service/StockInLineService.kt
+++ b/src/main/java/com/ffii/fpsms/modules/stock/service/StockInLineService.kt
@@ -245,11 +245,18 @@ open class StockInLineService(
             this.item = item
             itemNo = item.code
             this.stockIn = stockIn
-            // PO-origin: store in stock qty; others: store as received
-            acceptedQty = if (pol != null && item.id != null) {
-                itemUomService.convertPurchaseQtyToStockQty(item.id!!, request.acceptedQty ?: BigDecimal.ZERO)
+            // PO-origin:
+            // 1) store user-input qty in acceptedQtyM18 (purchase unit)
+            // 2) calculate stock acceptedQty with round-down
+            if (pol != null && item.id != null) {
+                acceptedQtyM18 = request.acceptedQty.toInt()
+                acceptedQty = itemUomService.convertPurchaseQtyToStockQtyRoundDown(
+                    item.id!!,
+                    request.acceptedQty
+                )
             } else {
-                request.acceptedQty
+                // Non-PO flows: keep legacy behavior
+                acceptedQty = request.acceptedQty
             }
             // Set demandQty based on source
             if (jo != null && jo?.bom != null) {