Setting up attribute rules and supplemental product data sources at the multi-client account level in now possible in Google Merchant Center Next.
For attribute rules, they apply to all sub-accounts by default, but specific sub-accounts can be excluded if needed. To create unique attribute rules for a sub-account, exclude it from the multi-client attribute rules inheritance. Test and preview draft rules to ensure accuracy before applying them.
Supplemental product data sources enable the efficient management of custom labels, promotion IDs, titles, and other data across multiple sub-accounts. This new feature streamlines product data management, enhancing consistency and accuracy across accounts.
For more information on setting up supplemental product data sources and attribute rules on multi-client account level, read the official help page articles here respectively:
