tryton-modules-account-dunning-letter 6.0.1-3 (amd64 binary) in ubuntu lunar

 Tryton is a high-level general purpose application platform. It is the base
 of a complete business solution as well as a comprehensive health and hospital
 information system (GNUHealth).
 .
 This package adds the possibility to generate a dunning letter for configured
 levels after the processing of dunnings.