diff --git a/README.md b/README.md
index 55844bf..646eed0 100755
--- a/README.md
+++ b/README.md
@@ -49,6 +49,7 @@ This module allows you to create backdated inventory adjustments with a specific
    - Stock move line `date` field
    - Stock valuation layer `create_date` field
    - Account move `date` field (if real-time valuation is enabled)
+   - Account move `account_id` field: Overrides the interim account with `521301 Selisih Persediaan` for the non-valuation side of the entry.
 
 ### Models
 
diff --git a/models/stock_inventory_backdate.py b/models/stock_inventory_backdate.py
index ffc4868..c2800df 100755
--- a/models/stock_inventory_backdate.py
+++ b/models/stock_inventory_backdate.py
@@ -408,16 +408,49 @@ class StockInventoryBackdateLine(models.Model):
         # Refresh move to get account_move_ids
         move = self.env['stock.move'].browse(move.id)
         if move.account_move_ids:
+            # Find target account 521301 (Selisih Persediaan)
+            target_account = self.env['account.account'].search([
+                ('code', '=', '521301'),
+                ('company_id', '=', self.inventory_id.company_id.id)
+            ], limit=1)
+            
             account_date = backdate.date()
             for account_move in move.account_move_ids:
+                # Update move date
                 self.env.cr.execute(
                     "UPDATE account_move SET date = %s WHERE id = %s",
                     (account_date, account_move.id)
                 )
-                self.env.cr.execute(
-                    "UPDATE account_move_line SET date = %s WHERE move_id = %s",
-                    (account_date, account_move.id)
-                )
+                
+                # Update lines date and account if target_account is found
+                if target_account:
+                    # Get valuation account for this product's category to identify which line to update
+                    # For inventory adjustments, we want to update the non-valuation line
+                    valuation_account = product.categ_id.property_stock_valuation_account_id
+                    
+                    if valuation_account:
+                        # Update the line that is NOT the stock valuation account
+                        self.env.cr.execute(
+                            """UPDATE account_move_line 
+                               SET date = %s, account_id = %s 
+                               WHERE move_id = %s AND account_id != %s""",
+                            (account_date, target_account.id, account_move.id, valuation_account.id)
+                        )
+                        _logger.info(f"Updated account_move {account_move.id} lines with account 521301")
+                    else:
+                        # Fallback: just update dates if valuation account is not found (though it should be)
+                        _logger.warning(f"Valuation account not found for product {product.name} (categ_id: {product.categ_id.id}). Only updating dates.")
+                        self.env.cr.execute(
+                            "UPDATE account_move_line SET date = %s WHERE move_id = %s",
+                            (account_date, account_move.id)
+                        )
+                else:
+                    # No target account found, just update dates
+                    _logger.warning("Target account 521301 not found. Only updating dates for account move lines.")
+                    self.env.cr.execute(
+                        "UPDATE account_move_line SET date = %s WHERE move_id = %s",
+                        (account_date, account_move.id)
+                    )
                 _logger.info(f"Updated account_move {account_move.id} and lines to {account_date}")
 
         # Invalidate cache to ensure ORM reloads data from DB