3.1.4. Third Party Custodians
3.1.4.1. Key Third Party Custodians 3.1.4.2. Tier 2 Third Party Custodians 3.1.4.3. Tier 3 Third Party Custodians 3.1.4.4.  Third Party System Generated
Description:  Custodians belonging to an outside entity that has been brought into the litigation by either party. Estimating metrics for outside entities is a challenge and they may resist or refuse information about their systems and ESI issues.