Requirements Analysis for Zoho Recurring Sales Orders

I'm looking for someone to do a requirements analysis for our Zoho Recurring Sales Orders system on the web platform. This analysis will focus on the system's functionality, going into moderate amounts of detail. Specifically, I need someone to create detailed documentation outlining key features, identify potential development problems, and suggest solutions. The deliverable should provide a clear picture of what our system can do, how efficient it is, and how easy it is to use.