Print Purchase Order from ME23N

Hello. I need to know, how the way to enabled the print button or print option on menu, when I see the P/O through ME23N Trx. On my installation R3 4.7, When I click on print preview of the order, the button of print is disabled. Authorization problem is impossible, 'cause I working with a SAP_ALL Account. If any member of this community known the solution, please answer.

With my best regards from Chile

Leonardo