Approval Notification message in PCW

Dear all,

I am working in SRM 7.02 , Using Process Controlled workflow .

When the employee creates a SC and order , the PCW triggers the notification is send to the approver as mail below,

Approval Process: Document Updated.

The following messages have been triggered by the system.

You can view the document directly.Choose the following link:

Login.

So my question is,

1. Is this message is triggered because , we scheduled the background job of program '/SAPSRM/OFFLINEAPPROVALSEND'. ???

2. How can i customized this mail information.(i.e I need to add SC number and description in the mail)  ???

Kindly help me .

Thanks.