Merchant Center & product data
Practical guides for the layer underneath ecommerce.
Merchant Center problems rarely live in one interface. This series follows product data from source catalogue through feeds, Google Shopping, landing pages and operating process, with enough technical detail to be useful to ecommerce managers, agencies and developers.
Feed rules vs source data: when to transform and when to fix upstream
↗02Google Shopping product title optimisation: build titles from product truth, not keyword stuffing
↗03GTIN, MPN and brand in Merchant Center: how to audit product identifiers properly
↗04Merchant Center disapprovals: how to find the real root cause
↗05Merchant Center price and availability mismatches: what to check first
↗06Merchant Center & Product Feed Health Checklist
↗07Product Data Cleanup Before Performance Max: What to Fix First
↗08Why product data can hold back ecommerce before ad spend does
↗09Google Merchant Center Feed Optimisation: Titles, GTINs, Attributes and Product Data
↗Start here
Five deep dives + one practical health check.
40-point Merchant Center & Product Feed Health Checklist
Use the full checklist online, then unlock the six-page PDF with your email address if you want an offline copy.
Open the checklist → DiagnosticsMerchant Center disapprovals: find the real root cause
Trace an issue from Google's status back through source data, transformations, landing pages and structured data.
Read guide → OperationsPrice & availability mismatches
Understand timing, variants, structured data and the update chain behind recurring mismatch issues.
Read guide → IdentifiersGTIN, MPN & brand
Audit product identity properly and avoid invented or misapplied identifier data.
Read guide → ArchitectureAttribute rules vs source data
Decide when a transformation belongs in the feed layer and when it is hiding upstream catalogue debt.
Read guide → OptimisationGoogle Shopping title optimisation
Build category-specific title logic from reliable attributes and test it without keyword stuffing.
Read guide →Foundation
Already have the basics? Start with the existing feed-optimisation overview.
The original FifteenFold guide explains why product data connects the storefront, Google Shopping and marketplaces. The new series goes deeper into the failure modes and operating decisions behind it.
When reading is not enough
Start with the smallest useful diagnostic step.
If you have a live Merchant Center or feed problem, the free triage route is designed to answer one question first: which layer should you investigate?
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