Fetching Data in APO - Process Order

Hi Friends,

I am writing a program to fetch data and display in APO.

Input for my program will be :  Product ,  Location and Planning version

And i want to fetch output similar to that of tcode  /SAPAPO/RRP1

I am able to get the list of recpt / reqmnt elements by using FM /SAPAPO/RRP_LC_PEGID_GET_IO,  but what I want now is Process Order number related to that.

This number we can see on the title bar if we double click any of the items on the list.

Kindly let me know, how I can fetch this data.

Thanks,

Brijesh Soni