There are diagrams suggesting structures for feedback and corrective action. One appproach is the Plan, Do, Check, Act loop. But that approach to systems management has only one feedback opportunity - in the Check stage.
Here's a better one. Col John Boyds OODA (Observe, Orient, Decide, Act).
There are several important points here:
- Each stage has a feedback loop
- The orientation process is critical to decision making. Domain and context in that domain establish the orientation of the observer. Without a Domain and Context in that Domain, the Decision making processes cannot use the information in any useful manner.
- Unfolding events, circumstanced, new information, and interaction with the environment provides the basis for new orientation and new decision processes, and of course new actions in the Domain based on this "new" stuff.
The source for John Boyd's work can be found here. Try this once you've seen that PDCA is missing many interconnections. The reason to try this is simply that the OODA loop is used daily in fighter pilot training to actual program management processes for complex system. It is baked into the "control loops," of many Program Planning and Controls weekly business rhythms. It's agile, it's adaptive, it's iterative, and it's effective in practice.