This is a very unusual, though entirely plausible situation. The vast majority of agents either never ask, or do not have the face time with you (because your contract is already in a waiting car) in order to ask what the code is for or where you work. Knowing the name of the affiliated company is always the best preparation. If you do not work for that company, just say you have a consulting contract with them, or something similar. Also, if you can make a mental note (or save the information in your smart phone, as I do) where you have seen or experienced such a thing is always helpful. Also, your status with Avis will have a lot to do with both the likelihood of an agent asking you, and also the opportunity that any agent will have to ask you (in other words, if the contract is already in a waiting car, then an agent will likely never have the chance to ask), but if you have a lower status which requires you to go to the counter before check out, then you would be much more "exposed."

Yes, please, share this information with us.

Yes, I agree with IAH, some obscure AWD, without the associated information for it makes that AWD all but unusable for the rest of us, and repetitive reposting of the AWD, without the supporting information, does not make it any better than the last time you posted it. Considering the above posting from epost77, it also makes using such a code quite risky, which regular renters, such as IAHtraveler and myself, would avoid like the plague!