The Caps Lock/Shift key jammed on my Olivetti Lettera 32

There are two ways to deal with that (before taking you olivetti to an authorized dealer):

1. There's a lock key under the carriage. Have you unlocked it?
2. The carriage might have been locked by a piece of paper or something else. Release it (pull it) and clean its passage (there is a button you press in order to release it - proceed with care).

It is probably just gummy. Get some WD40 and lube all the vparts and pivot points inv0lved in the shift.

DickyO

Is it possible the margins are set closely together? There may be a carriage lock on the bottom l or r side of the carriage.

If the locking lever is off, then the carriage is bound, or one of the tabs is hung, try releasing all the tabs, pushing the space bar or the tab key while gently moving the carriage.
Try all of the function like shift while gently pushing on the carriage always to the right..
also check the that the margins are not locked.
This could be a lot of different things...

Make sure your cap lock key isn't pushed down. This will disable ribbon shift.

There is a lever in front of the right knob that is used to lock the carriage.

I’m happy to help further over the phone at https://www.6ya.com/expert/jayw_0e86fb055a7b73de

Learn how to unlock the carriage in Olivetti Lettera 22 Manual posted by Ed Cornish (Carriage Locking Lever 7). It is a different machine model, but the lock/unlock mechanism might be the same.
You can see the full manual at Ed’s Flickr account or you can download it from here: http://dl.getdropbox.com/u/1322442/Olivetti%20Lettera%2022%20Manual.pdf (temporary link)

THERE IS A CARRIAGE LOCK ON THE MACHINE IF I REMEMBER RIGHT IT'S SO THE CARRIAGE DOSENT MOVE WHEN IT IN THE CARRING CASE. LOOK ON THE LEFT AND RIGHT END OF THE CARRIAGE JUST BELOW THE PLATEN KNOBS OR IT MAYBE A LEVER ON THE SIDE OF THE KEYBOARD

Could be the carriage release lever is jammed or worse the escapement dog is broken.