According to the International Guidelines for Museum Object Information: The CIDOC Information Categories, acquisition information supports Security and Accountability. It is needed to provide evidence of the legal status of the object as part of the museum's collections and should record the following information categories:
- Acquisition method
- Acquisition date
- Acquisition source
Frequently acquisition of objects is confused with legal acquisition. In this graph we describe only legal acquisition of objects. Physical acquisition is dealt with in the Collection Information graph.