It turned out the previous admin had installed 30-day evaluation licenses for some capacity-based features and never replaced them. Now, those features had shut down, breaking backup policies that depended on them.
To simplify management, Veritas shifted toward a Front-End Terabyte (FETB) model. In this structure, a single license key covers the total volume of protected data on the primary storage. This drastically reduced the number of keys required and allowed flexible deployment of agents and media servers without constant purchasing friction. veritas netbackup license key
But more important than its format is its (matching your purchase order) and feature set (embedded in the key string itself). Using nbgetkey on the master server, you can decode exactly what capabilities the key grants. It turned out the previous admin had installed