Action Required: Before 22C Upgrade
As mentioned in the Whats New 22B: Ensure Uniqueness in Trading Partner Item Numbers, you must run a scheduled process prior to the 22C upgrade. This will help in identifying any duplicate Trading Partner Items (Supplier Item, Customer Item, Competitor Item or Manufacturer Part Number) created intentionally or unintentionally and take necessary action. This applies to Manufacturer Part Numbers (MPNs) which were created either through Product Development or PIM work area. If you fail to do the same and if there are any duplicate trading partner items (including MPN) in your POD, the upgrade might fail.
For additional details refer to