Hi Viki, If the check has been reconciled it cannot be edited, you would need to reverse the check with another transaction and then create a new check for the correct vendor. Did you create the check as a Vendor Payment or Other Payment? @Viki Miller

Yes, it was entered as a Vendor bill payment.  Thanks for your help. 

In this case, you can use a vendor refund to reverse the vendor payment and then record a new payment. Please let us know if you have any additional questions.