How many document pages can be sent to Intelligent Indexing?

This would be dependent on the version of DocuWare your organization is currently operating on. For DocuWare versions 7.1 and below, only the first 5 pages are sent to Intelligent Indexing, however, if DocuWare Desktop Import is 
utilized, the first 25 pages would be sent to Intelligent Indexing.

For DocuWare versions 7.2 and higher with Intelligent Indexing as SAAS or DocuWare Cloud, the first 20 pages are sent to Intelligent Indexing.

KBA is applicable to both Cloud and On-premise Organizations.