diff --git a/svc/queries/order_write.go b/svc/queries/order_write.go
index fac0725..1657c39 100644
--- a/svc/queries/order_write.go
+++ b/svc/queries/order_write.go
@@ -475,6 +475,16 @@ func normalizeNumericToken(s string) string {
 	return s[i:]
 }
 
+// normalizeDim1Token: variant karşılaştırması için Dim1'i eski kuralla normalize eder.
+// (boşluk, YAS ve Y kaldırılır; UPPER)
+func normalizeDim1Token(s string) string {
+	s = strings.ToUpper(strings.TrimSpace(s))
+	s = strings.ReplaceAll(s, " ", "")
+	s = strings.ReplaceAll(s, "YAS", "")
+	s = strings.ReplaceAll(s, "Y", "")
+	return s
+}
+
 // =======================================================
 // AKSBIR DETECTION
 // =======================================================
@@ -514,7 +524,8 @@ func ValidateItemVariant(tx *sql.Tx, ln models.OrderDetail) error {
 	color = normalizeEmpty(color)
 	dim1 = normalizeEmpty(dim1)
 	dim2 = normalizeEmpty(dim2)
-	dim1Numeric := normalizeNumericToken(dim1)
+	dim1Norm := normalizeDim1Token(dim1)
+	dim1Numeric := normalizeNumericToken(dim1Norm)
 
 	if item == "" {
 		return fmt.Errorf(
@@ -559,7 +570,7 @@ func ValidateItemVariant(tx *sql.Tx, ln models.OrderDetail) error {
                     )
                   )
         ) THEN 1 ELSE 0 END
-    `, item, color, dim1, dim2, dim1Numeric).Scan(&exists)
+    `, item, color, dim1Norm, dim2, dim1Numeric).Scan(&exists)
 
 	if err != nil {
 		return fmt.Errorf("ItemVariant kontrol query hatası: %w", err)
@@ -640,7 +651,8 @@ func ValidateOrderVariants(db *sql.DB, lines []models.OrderDetail) ([]models.Inv
 		color := normalizeEmpty(normalizeKeyPart(ln.ColorCode))
 		dim1 := normalizeEmpty(normalizeKeyPart(ln.ItemDim1Code))
 		dim2 := normalizeEmpty(normalizeKeyPart(ln.ItemDim2Code))
-		dim1Numeric := normalizeNumericToken(dim1)
+		dim1Norm := normalizeDim1Token(dim1)
+		dim1Numeric := normalizeNumericToken(dim1Norm)
 
 		// ItemCode boş ise invalid
 		if strings.TrimSpace(item) == "" {
@@ -659,7 +671,7 @@ func ValidateOrderVariants(db *sql.DB, lines []models.OrderDetail) ([]models.Inv
 		}
 
 		var exists int
-		if err := stmt.QueryRow(item, color, dim1, dim2, dim1Numeric).Scan(&exists); err != nil {
+		if err := stmt.QueryRow(item, color, dim1Norm, dim2, dim1Numeric).Scan(&exists); err != nil {
 			return nil, fmt.Errorf("validate query hatası (i=%d): %w", i, err)
 		}