ERP software maintenanceSoftware vendors collect annual maintenance charges as a percentage of the software product price. The maintenance charges may include upgrade costs also. A maintenance plan is recommended as otherwise incase of a failure it would be difficult to get maintenance done.
A maintenance plan also ensures that companies are given the latest versions of the software so that in case support for the earlier versions is discontinued the company is not left with an unsupported ERP.
When working out a maintenance plan with a vendor ensure that there are no hidden clauses, the frequency of upgrade is high and often, penalties if any, and ways to save on maintenance charges.
If a company has IT staff reading the online manuals and tech knowledge base will go a long way in understanding the product and its features better.