Perform several levels of work through one action

While adding an amount to a customer’s running total, an agent can be calculating that total and preparing the report that contains it. These are related descriptions of the work being performed through the action. The report can still be unfinished. Earlier data collection supplies an input; it need not be taking place during the addition.

Use B.1.5.EW when you cannot explain these constituent–whole connections: recover the constituent operations, the encompassing work and the conditions that connect them. Stop expanding where the practitioner can perform the needed operation or obtain its required result from another agent. Check that the necessary capabilities and shared resources fit together. Knowing the final procedure does not supply an unlearned operation in the middle.

If the report must now identify the first chronological crossing of a limit, preserving the final total is insufficient. Use B.1.5.RS to compare a proposed replacement with the requirements of each receiving use; restoring order or changing the procedure may be necessary. A.22.CGUS helps distinguish a continuation that can be performed now from one whose constituent capability or resource conditions are missing. A feasible practice or preparation step may remain available while the whole performance is not.