X++ CODE TO CREATE PURCHASE ORDER AND PO CONFIRMATION

static void OrderCreate(Args _args)
    {
        NumberSeq            numberSeq;
        PurchTable            purchTable;
        PurchLine            purchLine;
        purchFormLetter     purchFormLetter;
        ttsBegin;
        numberSeq             =    NumberSeq::newGetNum(PurchParameters::numRefPurchId());
        numberSeq.used();
        purchTable.PurchId    =    numberSeq.num();
        purchTable.initValue();

        // po creation
        purchTable.initFromVendTable(VendTable::find('1100'));
        if (!purchTable.validateWrite())
            {
                throw Exception::Error;
            }
        purchTable.insert();
        purchLine.PurchId    =    purchTable.PurchId;
        purchLine.ItemId     =    'D0006';
        purchLine.createLine(true, true, true, true, true, true);
        ttsCommit;
        info(strFmt("Purchase order '%1,%2' has been created", purchTable.PurchId,          purchTable.DeliveryDate));

        // po  confirmation
        purchformletter = purchformletter::construct(documentstatus::purchaseorder);
        purchformletter.update(purchtable, strfmt("inv_%1", purchtable.purchid));
        info(strFmt("purchase order '%1' has been confirmed", purchTable.DeliveryDate));
     
        // po  Invoice
        purchFormLetter = PurchFormLetter::construct(DocumentStatus::Invoice);
        purchFormLetter.update(purchTable, strFmt("Inv_%1", purchTable.PurchId));
        info(strFmt(" Purchase order '%1' has been invoiced", purchtable.InvoiceAccount));
    }

• Make sure that warehouse and site are specified for the given product in product information management->manage inventory->default order settings and site specific order settings.
• If warehouse and site are not specified for the given item.
• If not specified it will throw error as site and warehouse must be specified for the given item.