  We show how to derive asymptotic charges for field theories on manifolds with
"asymptotic" boundary, using the BV-BFV formalism. We also prove that the
conservation of said charges follows naturally from the vanishing of the BFV
boundary action, and show how this construction generalises Noether's
procedure. Using the BV-BFV viewpoint, we resolve the controversy present in
the literature, regarding the status of large gauge transformation as
symmetries of the asymptotic structure. We show that even though the symplectic
structure at the asymptotic boundary is not preserved under these
transformations, the failure is governed by the corner data, in agreement with
the BV-BFV philosophy. We analyse in detail the case of electrodynamics and the
interacting scalar field, for which we present a new type of duality to a
sourced two-form model.
