Delivery Scheduling not created through MD04 for Scheduling Agreement

Hi experts ,

I'm facing a peculiar problem . Actually , new to MM module - I think that's why it causes trouble ..

When , I'm trying to create Scheduling agreement using LPA doc. type , - I used , the below mentioned steps ...

With MRP:

1. ME31N : Create Schedule agreement

2. ME01: Create source list, in which MRP indicator which del. sch. lines generation ie. indicator 2

4. MD03 : Planning file entry - maintain NETCH ....

and , maintain SA delivery schedule line  - 2  ( Schedule lines in the opening period)

But , when I go to MD04 tcode , no delivery schedule is created .

How could i solve this problem ? please help ....