# CostBook DLO Mappings

The CostBook object is a Salesforce standard object that you can ingest and map to Data Model Objects (DMOs) for use in Data Cloud-powered features and agents.

![Object Mapping Diagram for CostBook](https://a.sfdcstatic.com/developer-website/sfdocs/data-cloud/media/data-cloud-dmo-mapping/standard_mappings/CostBook_obj_mappings_v3.svg)

## Mappings to the CostBook DMO Object

The CostBook DLO is mapped to the [CostBook DMO](/docs/data/data-cloud-dmo-mapping/guide/c360dm-si-costbookdmo-dmo.md).

![Mapping diagram for CostBook DLO to CostBook DMO](https://a.sfdcstatic.com/developer-website/sfdocs/data-cloud/media/data-cloud-dmo-mapping/standard_mappings/CostBook_to_CostBookDmo_def_v3.svg)

- The CostBook DLO field **DataSource** maps to the CostBook DMO Object **DataSourceId** field.
- The CostBook DLO field **DataSourceObject** maps to the CostBook DMO Object **DataSourceObjectId** field.
- The CostBook DLO field **EffectiveFrom** maps to the CostBook DMO Object **EffectiveFromDateTime** field.
- The CostBook DLO field **EffectiveTo** maps to the CostBook DMO Object **EffectiveToDateTime** field.
- The CostBook DLO field **Id** maps to the CostBook DMO Object **Id** field.
- The CostBook DLO field **IsDefault** maps to the CostBook DMO Object **IsDefault** field.