Create sales order using x++

class Moeen_SalesOrder
{        
    /// <summary>
    /// Author:     Moeen Ahmed Sultan
    ///             D365FO & AX2012 Customization Consultant
    /// Email:      moeenahmedsultan@hotmail.com
    /// Tel:        +92 321 4589595
    /// Written on: 22nd Nov, 2018
    /// </summary>
    public static void main(Args _args)
    {        
        SalesTable salesTable;
        SalesLine salesLine;
        InventTable inventTable;
        InventDim inventDim;
        CustTable custTable;
        
        CustAccount custAccount;
        NumberSeq numberSeq;
        SalesId salesID;
        str warehouse;

        try
        {
            ttsbegin;
            
            salesTable.clear();
            //Number sequence automatically gets the next number as per system's configuration
            //You can create your own unique number for sales id. But it should not be duplicated.
            //NumberSequence of the system manages numbers for us.
            //SalesId is mandatory to create sales order
            
            numberSeq = NumberSeq::newGetNum(SalesParameters::numRefSalesId());
            numberSeq.used();
            salesTable.SalesId = numberSeq.num();
            salesID = salesTable.SalesId;

            //To give your own sales id.
            //salesTable.SalesId = strFmt("%1", "S0001");

            salesTable.initValue();

            //Set the warehouse as per your scenario
            //It will be used to set the Site & Warehouse and create inventory dimension id
            warehouse = "11";

            
            //Give CustAccount as per your scenario
            //It is mandatory to create sales order
            custAccount = "US-001";
            if(CustTable::find(custAccount))
            {
                salesTable.CustAccount = custAccount;
            }
            else
            {
                info(strFmt("Customer account %1 doesn't exist.", custAccount));
            }

            //Initializing the sales order from customer
            salesTable.initFromCustTable();
            if(InventLocation::find(warehouse).InventLocationId != "")
            {
                salesTable.InventSiteId = InventLocation::find(warehouse).InventSiteId;
                salesTable.InventLocationId = inventlocation::find(warehouse).InventLocationId;
            }
            salesTable.insert();
            try
            {
                inventTable.clear();
                inventDim.clear();
                salesLine.clear();

                //Give ItemId as per your scenario
                //It is mandatory to create sales line
                select * from inventTable
                    where inventTable.itemId == "A0001";
                            
                salesLine.clear();
                salesLine.SalesId = salesID;
                salesLine.ItemId = inventTable.ItemId;
                salesLine.itemIdChanged();

                //Initializing the sales line from inventory
                salesLine.initFromInventTable(InventTable::find(salesLine.ItemId));
               
                //Setting and creating inventory dimensions
                //I have given the warehouse in 
                if(Inventlocation::find(warehouse).InventLocationId != "")
                {
                    inventdim.InventSiteId = InventLocation::find(warehouse).InventSiteId;
                    inventdim.InventLocationId = Inventlocation::find(warehouse).InventLocationId;
                }
                salesLine.InventDimId = InventdIm::findOrCreate(inventDim).inventDimId;


                salesLine.createLine(NoYes::Yes, // Validate
                NoYes::Yes, // initFromSalesTable
                NoYes::No, // initFromInventTable
                NoYes::Yes, // calcInventQty
                NoYes::Yes, // searchMarkup
                NoYes::Yes); //

                //Set the values as per your scenario
                salesLine.SalesPrice = 250;
                salesLine.SalesQty = 3;
                salesLine.LineDisc = 10;
                salesLine.LineAmount= salesLine.calcLineAmount();
                salesLine.update();

                ttscommit;
            }
            catch(Exception::Error)
            {
                ttsabort;
            }

            //Invoicing the sales order
            SalesFormLetter formLetterObj;
            formLetterObj = SalesFormLetter::construct(DocumentStatus::Invoice);
            formLetterObj.update(SalesTable::find(salesID));

            info(strFmt("Sales order created with Sales ID: %1",salesID));
        }
        catch(Exception::Error)
        {
            ttsabort;
        }
    }

}