When Maximizer is set to "System to assign Address Book entries' IDentification field values" (the default), Maximizer already creates a primary key for you. It is the combination of [Client_Id] and [Contact_Number], where
- Companies and Individuals are assigned a unique [Client_Id] and their [Contact_Number] is 0
- Contacts are assigned the [Client_Id] of their parent record (Company or Individual) and a [Contact_Number] of 1, 2, 3, ....
System-assigned [Client_Id] values look like this:
090420252157153440001C
You cannot alter the format.