St3 rejected due to incorrect premises code ???

Hello everyone, 1 i filed ST-3 returns of my client for the period apr to june 12 but the same was rejected due to incorrect premises code. i made the correction in the form and generated corret xms file and then tried to upload but i was unsucccessful since message appeared that return was already filed. 2 I tried again to upload by selecting the "revise" option then also it was not accepted and message was shown that original return not filed/90 days expired. 3 i checked the "view st3" but there is no record. i checked the xml status and there i found the error in premises code. 4 Urgently waiting for your reply.