The Infracos have to submit an over-arching Asset Management Strategy (AMS) that sets out the management regime they intend to apply to the assets, and an Annual Asset Management Plan (AAMP) that documents the specific steps they will take under that regime for each asset class, forecasting out nine years into the future. Both of these require LUL's approval. These must demonstrate how the Infraco intends to discharge its PPP obligations including the adoption of an efficient and economic whole-life cost approach. Of necessity, this involves the Infraco providing cost information which should facilitate monitoring progress of Infracos' expenditure in relation to the baseline forecast in the PPP contracts which underpinned the level of the Infrastructure Service Charge.