1. How many partner funtions are there in SAP?

Three Partner Functions in MM Module.
1.OA-Ordering Address
3.PI-Invoicing Party

Total 38 partner functions in SAP

2. How to get inspection lot certificate?

use QC21 - Quality Certificate

3. How to Prepare the Functional Requirements Specifications (FRS)?

IBM itself is having separate division (Life Science) to
perform the CSV. Refer to them / contact them to get the FRS