offers with little or know explanation

I got this offer"rr redemptionon" my account. Does anybody know what this is? I get a lot off offers that seem to be in code with little or no explanation of what the offer really is.

Here is more info.

Caesars Palace
Offer Code: 1D7D7ZZ0AGR
Valid 01/25/2014 - 01/29/2014
no com rr redemption

yup, I called and they said it was my other offer, and that ID7d7... is not a code, ah even though it says offer code?

reel rewards