The generalized Bergshoeff-de Roo identification. Part II

We recently introduced a T-duality covariant mechanism to compute all-order higher-derivative interactions in the heterotic string. Here we extend formalism account for two-parameter family of corrections that also include bosonic string and HSZ theory. use our result full second order Double Field Theory (DFT) generic values parameters, including generalized Green-Schwarz transformation its invariant action.