You cannot change anything on a pending return.  Do not try.  Wait to see if it rejects -- it probably will--then change it after you get the rejection notice and re-file.

on my unemployment form uc-1099G it asked for my state Id number I put the wrong number In and efiled. Will it get rejected? 

Unfortunately, we have no way of knowing if the IRS will reject your return. If the IRS does reject your return because of the incorrect state id number, you will receive an email informing you that your return has been rejected. Please click these links, accepted or rejected by the IRS, to learn more.

If your return is rejected, please feel free to post here in AnswerXchange again if you need further assistance.