What is the File Size Limit for Importing Submissions directly in the UI in Vault?
Submission zip files up to 4GB are supported for importing through the UI.
If a user attempts to import a submission zip file larger than 4GB in the Vault UI they receive the following error message:
To import from this dialog, the submission package must be under 4GB. Use Vault FTP to import larger submissions.
The user needs to import zip files larger than 4 GB through an FTP Site.
Vault Submissions Documentation: Submissions Import