Sectors
Ecommerce: the till has to agree with the ads.
Feed, margin, landing, then Shopping and search. Reconciliation is not optional.

Ecommerce retainers without a feed owner are a stall. We need someone who can change a title and a price. If that person does not exist, we will say the account is not ready.
Shopping and Search should not bid against each other by accident. Brand terms are priced like brand terms. Discounts on the site must match discounts in the ad. Nothing infuriates a buyer like a price that changes on landing.
Returns and failed deliveries belong in the conversation about CPA. A cheap order that comes back is not a win.