- You can upgrade from 10.2.200 to 10.2.600. Check up the Release Upgrade Guide Epicor ERP 10.x to 10.2.600.x on Epicweb
2/3. Your company is responsible for testing, although you could engage Epicor or an Epicor VAR to assist. So make sure you have a good test plan. You also have the ability to use the ERP Analyzer tool that will help you identify any non standard customization here’s a link to another post How do you keep track of your changes/customizations to Epicor? - #28 by SteveFossey
4. Upgrade is from one major release to another eg. 10.2.200 to 10.2.600, update is within that particular major release eg. 10.2.200.16 to 10.2.200 17. Unless you are adding additional licenced modules to your system, then your maintenance should not increase, however always check with your CAM. Disclaimer I am not an Epicor Partner, and don’t work for Epicor.
As this is the first time you are doing this, and I don’t know your teams technical ability, then I would be engaging with Epicor or a Partner or a Consultant to run through the mechanics of the project and plan it out so you have have a good framework for future upgrades. Most importantly give yourself plenty of time and have meaningful and sensible deadlines. Finally If you are not happy at any stage don’t be afraid to put your hand up and state the reasons why.
There are plenty of posts on upgrading here on E10 help. I’ve added a few other things below.
The first steps I would take a close look at the release notes with regards to patches between the last patches of each major release. There is an excel spreadsheet attached to each one which allows you to look at each fix, and the version/patch it was applied to. You will see some overlap in each major release, it is worth looking at.
The next thing is to take a look at the “What’s new” for each major release. Kenetic UI gets a big update in 10.2.600. So you will want to be aware of that. Just a reminder 10.2.700 was released last month so It might be worth investigating 10.2.700 if you have not started the 10.2.600 process.
If you have Epicor Embedded Education there is a Delta course on the changes also. You may be able to ask your CAM for a copy, I don’t recall it being available on Epicweb anywhere.