Activity › Forums › Salesforce® Discussions › What is the Maximum file size for external data Salesforce API upload? Tagged: Contact, External Data API, External Data Source, Salesforce API, Salesforce.com Salesforce® Discussions What is the Maximum file size for external data Salesforce API upload? Posted by Prachi on October 15, 2018 at 12:58 PM What is the Maximum file size for external data API upload? William replied 7 years, 6 months ago 3 Members · 2 Replies ContactExternal Data APIExternal Data SourceSalesforce APISalesforce.com 2 Replies Avnish Yadav Member October 17, 2018 at 12:35 PM Hello, If you use the External Data API: 40 GB. Maximum file size per external data upload If you use the user interface: 512 MB Thanks. [adinserter block='9'] William Member October 30, 2018 at 3:49 AM When working with the External Data API, consider the following limits, in addition to the general Analytics limits. The following limits apply to all supported editions. Contact salesforce.com to extend the limits. Hope it helps you. Log In to reply. Public All Members My Connections Only Me PublicAll MembersMy ConnectionsOnly Me Public All Members My Connections Only Me