A Note On: "A Hybrid Benders Approach For Coordinated Capacitated Lot-Sizing Of Multiple Product Families With Set-Up Times," By T. Bayley, H. Sural, And J. Bookbinder

In a recent paper by Bayley et al. [2018. "A Hybrid Benders Approach for Coordinated Capacitated Lot-Sizing of Multiple Product Families with Set-Up Times."International Journal of Production Research56 (3): 1326-1344] on a capacitated lot-sizing problem, a Benders-based approach is described. Strengthening the master problem is based on inequalities that should be valid. We provide insight indicating that this is not the case for those inequalities proposed by Bayley et al. (2018).