Finds products served by multiple Shopping campaigns at the same priority — the internal competition that silently breaks brand/non-brand splits and hands control of bids to Ad Rank instead of you.
by Frederick Vallaeys (concept), Chiliad (rewrite)·chiliad.io
Audits the product titles behind your actual Shopping spend: too-short titles wasting the character budget, identical titles on multiple products, and policy-risky all-caps titles.
Triggers a Merchant Center feed fetch every hour via the Merchant API — fresher prices and availability than the standard daily feed schedule allows.
Finds products that are eligible in your Shopping campaigns but got zero impressions — inventory paying rent in the feed while Google never shows it.
Shopping Duplicate Product Targets scans the shopping performance data for the chosen window and flags every product that actually served impressions from two or more Shopping campaigns set to the same campaign priority. Same-priority overlap means Google decides which campaign serves by Ad Rank — your intended split of budgets, bids and negatives no longer applies to that product. Intentional waterfall setups (same product in high/medium/low priority campaigns) are not flagged.
| Variable | Default |
|---|---|
DATE_RANGE | LAST_30_DAYS |
MIN_COST | 1 |
TOP_N | 50 |
EMAIL_ADDRESS | (empty) |
Scanned 8412 product/campaign rows (LAST_30_DAYS). === Products served by multiple same-priority Shopping campaigns === Products analyzed: 1240 With overlap: 2 Item 8712345 total cost: 84.10 clicks: 112 - Shopping — Bestsellers (priority 1) cost: 61.20 - Shopping — All Products (priority 1) cost: 22.90 Item 8767890 total cost: 42.75 clicks: 58 - Shopping — Brand (priority 0) cost: 30.15 - Shopping — All Products (priority 0) cost: 12.60 Email sent to you@example.com
Detection is based on products that actually served, so a structural overlap with zero traffic in the window won't appear — run monthly with LAST_90_DAYS for a deeper sweep. Performance Max campaigns don't have priorities and are outside this check (PMax always outranks standard Shopping for the same product).