How do I keep product information consistent across Shopify and marketplaces?

Choose a source of truth for each product field, then map and transform that data consistently for every channel. Core facts such as identifiers, price, availability, dimensions and material should not contradict one another across Shopify, marketplaces and feeds. Channel-specific titles or descriptions may differ, but they should be derived from the same underlying product record. Use validation to flag mismatches before publishing. The objective is not identical copy everywhere; it is consistent facts with channel-appropriate presentation.