What is the purpose of a transformation rule in SailPoint?

The purpose of a transformation rule in SailPoint is to modify an attribute's value before provisioning to the target. Transformation rules are crucial in the process of preparing data for integration with various systems. They provide a way to adapt and format the data according to the specific requirements of the target system, ensuring that the values being provisioned are accurate and effective for the intended use.

By adjusting attributes before they are sent out, transformation rules help to ensure compatibility with the target application, which might have different data formatting or constraints. This aspect is vital for maintaining data integrity and operational efficiency during the provisioning process. It enables organizations to automate the handling of identity data while reducing errors and ensuring compliance with the business rules defined in the identity governance framework.

In contrast, the other options touch on different concepts within SailPoint. For instance, determining whether to add a link to an identity involves identity linking processes rather than data transformation. Overseeing access control pertains to managing permissions and entitlements, while identity reconciliation is about aligning identities between systems, neither of which directly involves transforming attribute values for provisioning.