ULDD Phase 5 (5.0.1) Specification Release

We’re updating the ULDD to provide further guidance on implementation and mandate dates associated with the data enhancements included in the ULDD Phase 5 specification published on Sept. 12, 2023. Please review the announcement below for an overview on the implementation and mandate dates associated with business-critical and UAD 3.6 alignment data enhancements for the Phase 5 data requirements.