Final answer:
In data aging for the universal journal, the criteria to determine which data is moved to the historical partition include transaction date, document type, company code, and posting period.
Step-by-step explanation:
The criteria that can be used to decide which data is moved to the historical partition when your customer wants to use data aging for the universal journal include transaction date, document type, company code, and posting period. Data aging is a technique used to manage the volume of data in the universal journal by segregating older data that is less frequently accessed into a historical partition. The criteria serve as filters to determine which journal entries are considered 'old' and can be moved away from the active database to optimize system performance.