CPM allows Admins to add expiredConsentPreference, a JavaScript parameter, while calling the consent form, which displays the consent form only if the Data Subject's consent is not found or has expired.
For more information, in the Publish tab of the Consent Form creation process, click the Configuration Guidelines button and scroll down to the Parameter Guidelines section.
If a token has expired, CPM displays a new empty consent form with a token expired message. This applies to non-shortened tokens regardless if they were limited to 255 characters or not. Shortened tokens will display a token expired message for tokens removed from the database and for expired tokens that are still existing in the database.
TrustArc · expiredConsentPreference Parameter · www.trustarc.com