Never trust Blackberry Manager client; it is the crappiest app I ever worked with. Try looking into the POLC log and grep the PIN number for this 8703e and see if there is any errors. Your BES is not really very updated (BES4.1.1) and your 8703e is quite new device. You are probably running into some error like this:-
Device info for hardwareID 0x84000b03 could not be found.
See either this article:-
Article Title: Cannot push applications to a BlackBerry 8700, BlackBerry 8100, or BlackBerry 8800 over the wireless network (due to outdated device.xml)
Article Number: KB04693
Link: Click
here.
Or this article:-
Article Title: Support - Cannot load applications wirelessly to BlackBerry 8703e and BlackBerry Pearl (due to outdated device.xml in BES 4.1 sp1 or earlier)
Article Number: KB05420
Link: Click
here.