SD Transaction Code Flow ?

Inquiry / Document type IN

Tcode for creation VA11,VA12,VA13. tables VBAK,VBAP
Quotation / QT
Tcode for creation VA21,VA22,VA23. tables VBAK,VBAP
Purchase Order /PO
Tcode for creation ME21,ME22,ME23. tables EKKO,EKPO.
Sales Order /OR
Tcode for creation VA01,VA02,VA03. tables VBAK,VBAP
Delivery /LF
Tcode for creation VL01,VL02,VL03. tables LIKP,LIPS
Billing /MN
Tcode for creation VF01,VF02,VF03. tables VBRK,VBRP

To create a sales order we need purchase order number and custmer number. Before that, to create a purchase order we need to have material no, vendor no.

To create vendor tcode is  xk01(create), xk02(change) , xk03(display) ,Tables are LIFA1.

To create custmer tcode is xd01, xd02, xd03, Table is KNA1.

After creating sales order using this no we can create delivery note t code is VL01.