A change request is a document containing a call for an adjustment of a system. It is of great importance in the change management process.
A change request is declarative. It states what needs to be accomplished, but leaves out how the change should be carried out. Important elements of a change request are an ID, the customer (ID), the deadline (if applicable), an indication whether the change is required or optional, the change type and a change abstract, which is a piece of narrative.
Change requests typically originate from one of five sources:
problem reports that identify bugs that must be fixed, which forms the most common source
system enhancement requests from users
events in the development of other systems
changes in underlying structure and or standards (e.g. in software development this could be a new operating system)