FB60

Do you know about the transaction FB60? If yes then could

you explain me in simple terms what it does,

what is its realtion with Purchase Order and Invoice (if any)? What do you

mean by a scenario when we say that a Purchase Order

does not have an Invoice or in other words, if invoices which are not

matched to a purchase order can be reported against a

Product Category Group? What do we mean by this and how can Product

Category Group be related in case of an unmatched invoice?