You may wish to delete a payment to a supplier, if it has been recorded incorrectly in the system. Payments cannot be edited, they must be removed and recorded again with the correct details.
Identify the transaction you wish to delete from the list of supplier transactions, and click the transaction to view it. Click Options > Delete and specify a reason for deletion, for traceability. Any time you delete anything from the system it keeps a track of who made the change, and when.
CAUTION: Be wary of deleting any transaction from ShowHouse though, as all financial activity leaves a trail and sometimes this may appear confusing to the tenant, landlord or supplier involved.