if(row.Part_Description != null)
{
	check_same_item = 0;
	for each  rec in input.Item_Details
	{
		if(rec.Part_Description == row.Part_Description)
		{
			check_same_item = check_same_item + 1;
		}
	}
	if(check_same_item == 2)
	{
		alert "You have already entered the same item";
		row.Part_Description=null;
	}
	else
	{
		mat_data = Materials[ID == row.Part_Description];
		row.Rate=ifnull(mat_data.Selling_Price,0.0);
		row.Part_No=mat_data.ID;
		/*-------------------------Tax Showing----------------------------*/
		if(input.Place_of_Supply.Inside_India == "Yes")
		{
			tax_det = if(input.Customer_Name.Destination.Short_Name == "" || input.Customer_Name.Destination.Short_Name == null,if(input.Place_of_Supply.Short_Name == "TN",mat_data.GST_Details,mat_data.IGST_Details),if(input.Customer_Name.Destination.Short_Name == "TN",mat_data.GST_Details,mat_data.IGST_Details));
		}
		else
		{
			tax_det = GST_Details[Tax_Name == "IGST0"].ID;
		}
		/*-----------------------End-------------------------------------------------------------------------------*/
		row.Tax=tax_det;
		row.UoM=row.Part_Description.Primary_UoM;
		row.Remarks_multiline=row.Part_Description.Specification;
		//Check Stock Summary
		row.Stock_FG_Qty=ifnull(Inventory[Part_No == row.Part_No && Part_Description == row.Part_Description].Available_Qty,0.0);
	}
}