Which features ensures data consistency while importing data using import sets and web services?

UI Policies are client-side mechanisms that only apply to data entered through the user interface and are bypassed when data is imported via import sets or web services.

Data Policies are server-side rules that enforce data integrity by applying field properties like mandatory or read-only across all data entry methods, including import sets and web services, ensuring consistent data quality.

While Business Rules can perform data validation, Data Policies are specifically designed for consistent field enforcement across all input channels without needing to write script.

Client Scripts execute in the browser and are therefore ineffective at enforcing data consistency for data imported through server-side processes like import sets or web services.

CSDM (Common Service Data Model) provides a standardized framework for data organization, but it is not a feature that technically *ensures* data consistency during import or web service interactions.