Ok, I am still trying to figure this out myself, but here's what happened to me today:  I had printed and wrapped 3 books to mail out today.  Before I left the house, I checked my computer to see if I had new requests that I could mail out at the same time.  There was one new one", Second Chance".  I was already mailing " Last Chance"  to someone else today.  I accepted the request, printed the wrapper and mailed out all 4.  When I got home later, I  was marking the 4 books mailed when I saw a message that I had one wrapper to print.  I checked and it was for the book "Second Chance".  OK, it took me awile to go through everything, but when I finally looked at the transaction for "Last Chance"   it showed that that wrapper had printed Twice- once yesterday and again this morning. Of course, I wasn't on the ball enough to realize that it was the same address.  So, I pm'd the requestor and told her of my mistake, and  I pm'd the lady who is waiting for Last Chance that she will be getting 2 books instead of one.  Can anyone explain what I did wrong?

You looked at the wrong book order when you went to print the label for the new request and went in and reprinted a label for the older order instead of one for the new order.. 

I usually only print one label at a time and don't print the next label until the 1st one is wrapped.  I also do it at the computer so I can double check everythign with it front of me.

Yeah, the covers are very similar and the names are No Chance, Last Chance and Second Chance.  I usually double check that the info on the paper matchs the actual book, but I guess after mailing 11 in 3 days I got careless!  I hope I get a  Second chance, rather than Last chance or No chance!!! Ok, enough of that.

But, if I had already printed the wrappers for the three other books that were requested yesterday, wouldn't the new request from today be on a new page by itself?  When I checked for new books, Second Chance was the only book on the page.  So, how did I re-print a wrapper from yesterday?  And, did I pay twice for the postage or did the re-print mail out for free? I will get charged for that somewhere along the line, won't  I?

Books move to a new tab when you mark them mailed.

When you saw the book order, it was alone on the "Books Requested" tab (or whatever the label is).  When you accepted the order, that last book moved to the "Books To Mail" tab where it was the 4th out of 4. (You had already printed 3 of them out). Then you printed the wrapper from one of the other books instead of that 4th book on that tab. When you actually mark books mailed, they go to the "Books I've Mailed" tab.

When I am wrapping books, I print the wrapper, wrap the book, and then mark the book mailed, one at a time. That way, it is impossible to re-print a wrapper twice or mark the wrong book mailed. This helps me to avoid that very situation. (I oftem have multiple book orders to mail on the same day, once I had 19 different orders to wrap and mail, without doing them one at a time like that, it would be easy to get confused.)

 won't someone have to  pay postage for that book?  I hope the lady I sent the extra book to won't have to pay Postage Due. And, thanks for the answers- I do understand now.

If you reprinted the wrapper with postage on it and then used it on 2 different books-if they catch it could very well  arrive to her postage due or come back to you postage due.  If the woman getting the extra book pays postage for it-you owe her a credit for that book. If it arrives postage due ot her and she refused and it gets sent back you might have to pay postage for it in both directions to get the book back.  If you want her ot send it to the right person-you owe her a credit to cover hte postage (2 credits if she paid postage due).

This could turn out to be a mess if the incorrect book gets through and the one she actually ordered gets flagged for reusing postage and arrives either back at your house or to her postage due.

 Mistakes happen and this one looks like it will get a bit messy before it is fixed. You did the exact right thing letting the other members that will be effected by this know what is going on! Please keep us updated, very interested to hear how this turns out!

Well, this has a happy ending!  Both books went through the system without anyone having to pay the extra postage, the requestor of Second Chance received one from someone else, and the lady who recieved both books sent me a credit when her book showed up a day or two after the wrong one.  This was my first big mistake here, and am very glad that I had such nice people to help me out.   Thanks to everyone involved!