This document discusses KBART, a NISO recommended practice for exchanging accurate journal holdings data between publishers, aggregators, and knowledge base providers. KBART aims to standardize this data exchange to ensure better access to content through link resolvers and other tools. It establishes a universally acceptable format for title level coverage data that specifies dates and volumes/issues. Adopting KBART will help address common problems with holdings lists and allow automated updating between systems. The document urges publishers, libraries and others in the scholarly content supply chain to participate in KBART and register their holdings data in the KBART Registry.