On what basis is the Aceeptance Plan prepared?

In any project Acceptance document is normally prepared using the following inputs. This can vary from company to company and from project to project.

Requirement document: This document specifies what exactly is needed in the project from the customer perspective.

Input from customer:This can be discussions, informal talks, emails etc.

Project plan: Project plan prepared by the project manager also serves as a good input to finalize your acceptance test.

User Manual: This is the formal document which is a very important input for valid planning.