...and sent the wrong book to the wrong sender x 2.  Whoops. 

The person has kindly offered to return the book but I told her to keep it and I'll refund her credit. I can't give her a refund as she has not marked it received because it's the wrong book and she'd rather wait until the 'received date' expires to get her refund through the system.    

Since I'm going to have to go through this again with the other [book and receiver] I mixed up this one up with, I was wondering if this is the correct way to proceed.  I'd not like to have it seem like I'm not sending out books to people and I also use tracking so it shows the books will have been delivered. 

I had noticed in the transaction archive there is a 'wrong book' option on the drop down menu under "type" where it says "all transactions." It made me think you must be able to mark a book on receipt that way.  Is this the more correct route? 

Easier than me telling you is to go to the HELP CENTER and put in wrong book. 

It will give both of you all the details you need to fix this.

I am simply saying this because the Help Center says it better than I possibly could.

Cozette's right -- the Help Center address this.  For your convenience, here is what it says:

If you mixed up two requests and sent the wrong books to two people:

• Contact both requestors.
  • Use the buttons on the active transactions for the books to let them know what happened.
  • The active transactions for books you have mailed with be on the Books I've Mailed tab, in My Account.
• You can ask the requestors to send the books to each other
  • You provide the addresses in PMs.
  • You should also offer them each a credit or postage for sending the book to the proper destination.
• When the requestors get the books they requested, they can mark them received.
  • This means the sender "breaks even" on these transaction, but each book ends up with the person who requested it.
• If the books are delayed enough to have been declared lost at PBS:
  • the requestors can still mark them received when they get them (giving you credit) from their Transaction Archives, as described in I received a book that was 'lost in the mail'.
• If either of the requestors marked either of the books received with a problem, you got credit at that time.

Hope it works out for you!

Thanks so much!   I hope it works out too!  I'm usually so careful, still can't figure out how that happened, lol.

Does anyone know about that "wrong book" option in the transaction archive menu?

If you are referring to the "wrong book" option in the drop-down menu of "type," that is simply a way of finding/sorting transactions. As you see, other options include "all transactions," "completed successfully," "cancelled by sender," etc. This is a sorting tool only -- there is nothing to mark.

The sender of hte very first book I ordered through PBS did this.  Neither of us marked the books received.  She buddied us each a credit, we marked them received and then we ordered the books from each other. 

That happened to me as well; both people who recieved the wrong books were very nice about it, and they sent me the books back to I could send them to the right person.  I gave one of them a credit to make up for the hassle and postage, and the other person said they didn't need any sort of refund...  I'm happy that if I had to mix up books, it was at least for two very kind and patient people n.n

I realise now that there is an easier way to do this, as mentioned in the above posts, lol

I've one person willing and ready to exchange the their book (with an extra credit from me) but have not heard back from the second person yet; and perhaps never will.  It's their choice, I don't want to send multiple PM's about it.  I would personally feel better if both were able to get their intended books at one point.  There's still a couple of weeks until the "received by" date, so there's still time.