Modification in ERP related to any issue is possible?

Question

I want to modify some things in the ERP, like i want to create an open discount option instead of fixed discount.

Answer 1

There are dozens of different ERP software out there, on a variety of technology platforms. Some of them can be customized to a certain degree, with configuration or with development.
But your question is too generic, at least mention the specific software you are using, and the programming language. Using tags like "help" or "sos" is not useful to understand your problem.