1. A method comprising: storing enterprise planning data in a data store according to a calculation model for an enterprise planning system, wherein the calculation model includes a plurality of hierarchically arranged nodes, and wherein each node has a corresponding level measure; receiving a submitted value set from a user corresponding to a leaf node in the calculation model; initiating an update process to accumulate the submitted value set into the data store, wherein the update process includes a set of activities each corresponding to a node in the calculation model; determining a subset from the set of available activities that are independent; scheduling all available activities having the lowest level measure; and executing the scheduled activities.