https://community.developer.cybersource.com/t5/Integration-and-Testing/why-transaction-key-is-invalid/m-p/28820#M15161 <P>Thios probably indicates a coding issue somewhere. Can't really say more then that without seeing some code.</P> Wed, 15 Aug 2012 11:31:40 GMT stymiee 2012-08-15T11:31:40Z https://community.developer.cybersource.com/t5/Integration-and-Testing/why-transaction-key-is-invalid/m-p/28812#M15157 <P>I have a payment form that users the AIM method to post to Auth.net via PHP. It works great right up to the moment that Transaction key don't work. I have get error message ---- AuthorizeNet Error: Response Code: 3 Response Subcode: 1 Response Reason Code: 103 Response Reason Text: This transaction cannot be accepted. I get the reason from guides API. The transaction key is invalid. I set up the new transaction key and make it work. I want to know why transaction key is invalid. Thanks.</P> Wed, 15 Aug 2012 02:25:49 GMT https://community.developer.cybersource.com/t5/Integration-and-Testing/why-transaction-key-is-invalid/m-p/28812#M15157 Jean 2012-08-15T02:25:49Z https://community.developer.cybersource.com/t5/Integration-and-Testing/why-transaction-key-is-invalid/m-p/28820#M15161 <P>Thios probably indicates a coding issue somewhere. Can't really say more then that without seeing some code.</P> Wed, 15 Aug 2012 11:31:40 GMT https://community.developer.cybersource.com/t5/Integration-and-Testing/why-transaction-key-is-invalid/m-p/28820#M15161 stymiee 2012-08-15T11:31:40Z