Why was my friend told to get a current ID and to return the next business day with a valid to redeem his winnings, then to be turned away,under the policy, that his temporary paper ID wasn't valid because it did not contain an expiration date

Not really sure why but I think they need to be able to see a date. He should get a permanent ID with an expiration date and take it back to them to claim his winnings. I also agree with Yolanda, that if it was a large amount they need to validate with a expiration date for tax purposes.

Not really sure unless it was of large amount for tax reasons.

I have no idea, could be a good google question?