Accidently booked service charges on a bank transfer -how do I fix as I cannot enter a negative service charge in bank transfers

I've tried everything.  The transfer amount was also keyed in under bank services charges in the bank transfer so in essence I've duplicated withdrawals in both bank accounts.


There is nothing under reverse transactions and nothing in the manual.  This is throwing out my bank rec but my GL is fine (which seems strange)

Thanks

LOri