Re: Sims 3 Pets Code is Invalid?

if the game was bought 2nd hand/used the code/s will be tied to the original persons account and are non transferable nor can they be re registered to another account for ,newly bought games either from origin or from a shop/store even newly bought games can run into the used/invalid code issue and you may need to contact CS

please read the FAQ first 

http://answers.ea.com/t5/The-Sims-3/FAQ-Invalid-and-Used-Serial-Codes-amp-Games-not-showing-up-in/m-p/194028

http://help.ea.com/en/article/contact-ea-help/

http://help.ea.com/en/contact-us/new/