Change Impact Analysis (TBOM/BPCA/SEA)

You launch SEA to estimate upgrade effort but it refuses to run, complaining there is no target. What did you skip in the Maintenance Planner, and why is that step a hard precondition rather than a convenience?

The obsolescence background job flags a batch of TBOMs as 'Out-of-Date' right before a BPCA run. A teammate wants to re-record all of them now. Why is that the wrong reaction?

Dynamic TBOMs give the most precise change-impact results. Given that, why do experienced teams build them for only a handful of transactions instead of everywhere?

A developer wants to push a one-object custom fix straight to production, arguing change impact analysis is only for big events like SP/EHP/upgrades. Where is that reasoning wrong?

In SEA's Test Scope Optimization Ranking you dial coverage from 100% down to 98%. What does that two-point move actually buy you, and what is the catch?

BPCA flags 200 processes as impacted by a transport. A manager reads that as '200 processes will break'. Why is treating every BPCA hit as a real behavior change wrong, and what does a hit actually guarantee?

SEA is built on BPCA, so why can't you just use BPCA for upgrade/EHP planning? What does SEA do that BPCA alone cannot?

A BPCA result shows a low Num-All, and the only object in the intersection is the NRIV number-range table. Is 'low Num-All = skip regression' a safe rule, or does the NRIV detail matter?

Static and semidynamic TBOMs are both bulk-generated and neither requires a real user to run the transaction. What single ingredient makes semidynamic the more precise of the two?

A TBOM is 'the list of objects in an executable'. But what feature of how a TBOM is attached lets BPCA say which business step is impacted, rather than just 'something changed'?

Beyond the maintenance-plan target, SEA needs three additional systems specified. Name all three and the role each plays — and why pointing all three at dev would corrupt the estimate.

Which system must you never run TBOM generation on, why, and what is the prerequisite that makes semidynamic generation possible there?