Final answer:
If an error is made in preparing a Fixed Penalty Notice, it should be cancelled following the proper procedures, including filling out a cancellation form and destroying any copies to prevent it from being issued.
Step-by-step explanation:
When a Fixed Penalty Notice (FPN) contains an error and needs to be cancelled, the correct procedure is not to issue it. The individual responsible for processing the FPN should instead follow their organization's set procedures for cancelling and recording the error. This may involve correctly filling out a cancellation form and keeping a record for accountability and auditing purposes. It's also essential to ensure that any related physical or electronic copies of the incorrect FPN are destroyed or properly disposed of to prevent accidental issuance or confusion.