RRV bucket is an error in Lotus Notes that occurs when the .nsf file is corrupted due to specific reasons. Lotus Notes email client is a proprietary of IBM. It is an email client used by enterprises for storing data on Database.
The Record Relocation Vector (RRV) is a table that points to the notes within the database. An RRV bucket contains information to locate the data for specific notes or object identifiers within a database.
RRV points to the Lotus Notes Database and tells Notes where to find a specific Note ID.