Hi Vijay Ranga,
There is no role of VYSPA in FS-PM and FS-CD integration. This means you don't need to execute Debit run or the transaction VYSPA. The standard interface calls the ISCD_SCPOS_MAINTAIN RFC and open items are created in FS-CD. This is completely automated.
Then once open items are created, you can set-up payment run and other follow up transactions.
Conclusion is that the whole process is automated and you don't need any Z program or table.
All the best...hope this info helps.. 