Does anyone of you know if I can get the business processes workflow ( f. e. purchase order or sales order) from somewhere?
at Microsoft Surestep
If you need business process workflow for SO or PO then i will suggest you to look for SCM books because business process is generally standard. You do have AX manuals options where there is detail of SO/PO operation, how to use different functionality. For AX manuals, you can get that from partner source.