exportation of sales orders data to our accountancy program

exportation of sales orders data to our accountancy program

How do we export all the data of the sales order into an excel file (or asciii or api) in order to use the data and insert them into our accountancy system without having to manually copy them??

BY ALL DATA WE NEED TO EXPORT NOT ONLY THE HEADER BUT ALSO THE CONTENT OF THE ORDER (LIST OF ITEMS).

How do we do it??