External data rows that are retrieved as search results now count toward a separate and much higher rate limit from rows retrieved by other means. So good news: Your org is unlikely to exceed rate limits when searching, reading, or writing to external objects. This change applies to Lightning Experience, Salesforce Classic, and all versions of the Salesforce1 mobile app.
|Maximum new rows retrieved by SOSL and Salesforce searches per hour. This limit doesn’t apply to high-data-volume external data sources.||100,000|
Maximum new rows retrieved or created per hour. This limit doesn’t apply to:
Previously, this limit also applied to rows retrieved via SOSL and Salesforce searches.