Google Commerce Search Deployment Guide - Manual (Page 28)

Appendix A Limits
Items in general
Items automatically get deleted in 30 days. As a result, in order to remain in the index, each
item needs to be refreshed once every 30 days.
Item update can take up to 24 hours to take effects
Feed size
● 10 feeds per account
● 100K items per feed (can be raised by Google if necessary)
● 10MB upload limit through Merchant Center or HTTPfFetch
● 1GB Limit for FTP file
Content API limit
● Content API has a 1MB limit per upload (b/4274808)
Search limit
● No synonym support for attributes (b/4396415)
● No support for authentication (people who know your CX number can access your index)
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