more detail is needed as this is very vague 

i have a discrepancy and i cannot post my bank reconciliation.  i have looked but do not know why there is a discrepancy.  it was at the year end

have you double checked opening and closing balances? If so ae you using auto entry to post your statement to account?  I use auto entry for everything except posting statements as there are other adjustments required. when was your year end and did accountant do adjusting entries   

Yes I have double checked opening and closing balances. I am not using auto entry. My accountant has given me the adjusting entries which I have not posted yet. My year end is October

year end is october and no adjusting entries made yet? I must have this the best in the industry as my accountant enters his own adjusting entries and then sends control back over to me.  (we use remote data).  maybe try opening you bank rec and sorting through it.  Best way I have found is sort by deposit or withdrawl your choice and clear matched items.  Start again and go one by one in the withdrawl or deposit and then start at beginning again and do with the the other transaction type.  you may find it. Before doing this have you checked your previous bank rec to see if it has the same ending balance as your opening?  

the transactions are good, seems like a program glitch.  this happened to me before and i had to upgrade the program

Make sure you have checked off - "show adjustments and corrections" as well. It could be hiding in there.