How to pass VTTP-TPNUM & VTTP-TPRFO to IDOC SHPMNT05

Hello Geeks,

         We have a scenario where we need to change the existing shipment to add more deliveries through Shipment inbound IDOC.When i look at the VTTP table the only difference i found is these 2 fields VTTP-TPNUM & VTTP-TPRFO .

         I tried in the segment like below

      e1edt18-param       = 'TKNUM'.

      e1edt18-qualf       = 'PID'.

      e1edt18-qualf     = 'CHA'.  But the existing delivery is getting replaced with the new one .

      Can you please let me know is that possible to create a shipment with multiple delivery through IDOC ?

     Appreciate your quick response.

Thanks,

Srini.