upgrading from 9.1.5 to 10.0.2

[mhoffman1]

I have an on-prem Splunk Deployment Server (DS) that's acting as a slave DS. This slave DS is version 9.1.5 and the master DS is version 10.0.2. 

I need to upgrade the slave DS which is version 9.1.5 to version 10.0.2. So, my question is can I go from Splunk version 9.1.5 straight to Splunk version 10.0.2 or do I need to upgrade the slave DS to version 9.4.3 and then to version 10.0.2 ? 

[richgalloway]

There is an interim upgrade required before 10.0.2.  See https://help.splunk.com/en/splunk-enterprise/administer/install-and-upgrade/10.0/upgrade-or-migrate-...