Tnx. IW22 Change PM Notification - Create external document (URL) posting

Hi:

I am in transaction IW22 i.e. Change PM Notification. There is a 'Services for object' drop down which appears below the enter tick. This appears in online but not in BDC. I have tried it through the transaction SHDB i.e. Transaction Recorder also herein the 'Services for object' does not appear. I need to post entries through 'Create external document (URL)' through the 'Services for object' drop down using BDC / BAPI / etc.

Please advice.

NB.