Incorrect. See below, an extract from the documents checklist.
Police Certificates and Clearances
You are strongly encouraged to submit your police certificates with your application to the CIO. If you are unable to obtain all the necessary police certificates, you may still send your application to the CIO without them. However, we strongly recommend that you take steps to obtain your police certificates now to avoid future delays. You must be ready to submit them when requested by an officer.
Note: Police certificates are generally considered to be valid for one year from date of issue; therefore depending on the processing time of your application, you may be requested to submit new certificates.