There are some upload limits when you create a file-based data offering:
Local upload from your device: 50 files at a time
Upload via Cloud connector: no restrictions; files are added in batches of 50, with a new addition every hour
Volume limit: 8 GB per file
Some subscription plans can include a limit on the total volume for all files within an organization’s data offerings.
For .csv, .xls, .xlsx, and .ods files, diagnostics and sample generation are only done for files under 500 MB.