A.3.3.CC:8 - Common Anti-Patterns and How to Avoid Them

Observed or example-demonstrated failure	Repair
Choosing valid values for each endpoint but violating the link between them	Test the joint tuple against the distance constraint, or reconstruct both endpoints from parameters satisfying it.
Carrying a fixed-total reduction into a model with arrivals	Make the changed total explicit or retain the counts needed to express it.
Answering a job-order question from queue lengths alone	Retain the ordered identities used by the service rule.
Treating a small coordinate count as a global representation	Supply coverage and equivalence information; use multiple charts or implicit constraints where needed.
Rejecting a parking position because immediate sideways motion is forbidden	Keep the position and test a sequence of allowed motions under the relevant steering and obstacle conditions.
Treating a failed search as impossibility	Return the search limit, or obtain a complete argument or computation for the impossibility claim.