Criteria for Analytics Index Training Set
When creating an analytics index for a Relativity workspace, be sure to select a training set which is a saved search containing only an extracted text field; excludes files larger than 30 MB; and does not include system or Excel spreadsheets.
If your training set contains files which don't meet this criteria, when you attempt to build the index you may get an error message reading, "Cannot build index with no items in the training set."
Files larger than 30 MB should also be excluded from the searchable set.