What are the key factors to be check in process audit of revenue in a manufacturing company???

AGREED WITH ALL ............

Agree with Mr. Venkitaraman

The key factors to check in process audit are :

>>>> Purchases

>>>> Sales

>>>> Creditors

>>>> Debtors

>>>> Sub Contracting

>>>> Inventory – Scrap

>>>> Export Incentives

>>>> Price Escalation

>>>> Cash Management

>>>> Payroll

>>>> Labor Contractors

>>>> Review of M I S and Internal Controls

>>>> purchase returns

>>>> sales returns

>>>> time keeping records

>>>> waste control and their realization

>>>> carrying cost of inventory

Thanks for the answers gentleman,

I am completely agree with your answer but i ask the key factors for "Revenue Audit."

I pointed out some points please help me to upgrade these points :-

1- Contracts/Agreement with the customers 

    a- Credibility of the customer,

    b- Identity of the customer,

    c- Payment terms in the contract,

2- Billing Cycle

   a- Journal Voucher was approved by authorized personal ??

   b- Invoices were generated as per contracts terms ??

   c- Supporting to enter the JV ??

3- Revenue recognition 

   a- IFRS/IAS implemented or not ??

   b- Basis of Calculation ??

   c- Delivery note and other documents like shipping release were there or not ??

4- Others

   a- Party reconciliation,

   b- Party Statement,

   c- Filling and Documentation - Project wise/Job Wise,

   d- Change in masters of party or any JV approved by authorized personal or not ??

Agree with Mr. Venkitaraman........................