Hi Harish,
There are few Standard Extractors available for PM Module,below are few of them..can you check if they satisfy your requirement,
2LIS_18_I0NOTIF
2LIS_17_I0NOTIF
2LIS_18_I0TASK
2LIS_17_I0TASK
0PM_ORDER_ATTR
If the requirement too specific then we have to go for Generic Datasource based on the Tables...and the PM Module are slightly complex.
rgds
SVU