Context for "Redeem code"?

I also don't know where it is used.
Maybe it is for Geni API somehow.
Redeem Code for iTunes etc web-services is prepaid code (key/password) for getting something...

http://www.geni.com/tr8n/phrases/view?translation_key_id=230307
this seems to point to the field where you can enter one...

Tried to digg even deeper and ended up here http://www.geni.com/tr8n/phrases/view?translation_key_id=230306
A localized version?

No it's not...
230306 is an experiment of invitation made for Israeli curator
The phrases are not related...

I have been digging a little more...
I believe it's relevant for pre-paid gifts or something like that:
http://www.geni.com/tr8n/phrases/view?translation_key_id=230312

and this one:
http://www.geni.com/tr8n/phrases/view?translation_key_id=230313