You've applied a bill payment to the wrong supplier
If your company data file is changeable, you can simply delete the payment. If your data file is unchangeable, you must first reverse the payment. Then you'll have to enter a new bill payment, making sure to apply it to the correct supplier. If you had already reconciled the first payment, be sure to mark the new one as reconciled as well.
For more information about correcting supplier payments, see Finding, deleting and reversing supplier payments. For step-by-step procedures for deleting bill payments, see To delete a supplier payment. For step-by-step procedures for reversing bill payments, refer to To reverse a supplier payment.