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ADS·Google Ads·warning

Missing Primary Conversion

No enabled Google Ads conversion action in this account is suitable to serve as a Primary bidding goal. Either nothing is marked Primary, or the actions marked Primary are micro-conversions (signups, page views, add-to-carts) rather than the macro business outcome. Smart Bidding optimises toward Primary actions, so campaigns are currently optimising toward the wrong target.

CL
By Christopher LandaverdeCreator of AdLint · ad-tech tracking specialistUpdated

Why It Matters

Google Ads splits conversion actions into Primary (counted in the "Conversions" column, drives Smart Bidding) and Secondary (recorded for analysis, not bidding). When the macro action. Usually Purchase for e-commerce, Lead for B2B. is absent, disabled, or set to Secondary, Smart Bidding finds no signal to optimise against and falls back to whichever Primary action exists, even if that action is a weak indicator of business value. The most common failure mode: a team enables "Add to Cart" as Primary "to give the algorithm more signal" and the campaigns proceed to drive cart-additions that never check out. The account looks active in reports but is not generating revenue proportional to spend.

How To Fix It

  1. In Google Ads, open Tools & Settings → Measurement → Conversion goals.
  2. Identify the single business outcome that defines campaign success. Purchase for e-commerce, Lead/Form Submission for B2B, App Install + In-App Purchase for app campaigns.
  3. Ensure that action is enabled and marked Primary in the Conversion goal settings.
  4. Demote micro-actions (page view, scroll, add-to-cart, video-watch) to Secondary. They still report for analysis but do not influence Smart Bidding.
  5. Open each active campaign's goal settings and confirm it inherits the account-default Primary goal. Campaigns occasionally have their own goal overrides that bypass account-level changes.

Example

Configuration
Primary: Purchase
Secondary: Add to cart, Begin checkout, Newsletter signup
For Your Client Report

This Google Ads account has no enabled Primary conversion action suitable for value- or volume-based Smart Bidding. Google's conversion goal documentation, Smart Bidding optimises exclusively toward Primary conversions; the absence of a macro Primary action causes campaigns to optimise toward weaker proxies or to fall back to count-only strategies. Fix: identify the single macro business outcome, mark it Primary, and demote micro-conversions to Secondary. Source: support.google.com/google-ads/answer/12727548.

Drop this paragraph into your client deliverable. Sources back to the canonical platform documentation linked below.

References

  1. [1]Google Ads. About conversion goals
  2. [2]Google Ads. Primary vs Secondary conversion actions

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