Hello Team,
We are using Smart List in the Files Related List and encountering the size limit that you can't upload a file greater then 50 MB.
The Salesforce Lightning attachment limit is set at 2GB (a hard-coded limit). This limit controls the maximum size of an attachment when uploaded using the standard related list, 'Notes & Attachments.
Do we have any document or guide around this Limit?
As per the
File Size Limits in Salesforceyou can't have a file > 2GB.
Please check these article also -
https://help.salesforce.com/s/articleView?id=experience.collab_files_size_limits.htm&type=5