Kishore,
I assume you saw my response at the below link - we are in process of completing a full-blown EBS/OTM using Fusion BPEL (newer version) and provided some experience/feedback to your previous post here:
http://www.otmfaq.com/forums/f70/otm...-761/#post1884 (Otm-ebs Integration)
Couple additional points of advice...I would definetly recommend you consider using the most recent version of Fusion v.10.1.3.3 from the very beginning of your integration project - in fact I believe it is a requirement for Oracle support if I recall correctly (Chris posted the link for the Metalink note a month or so ago - you should double check it). Previous versions had bugs related to the seeded integration that have been fixed in 10.1.3.3 of Fusion
Also, have you already committed to OTM v5.5 CU2 RU4? If not, you may want to consider a more current version. We implemented on v5.5 CU2 (no RU) and are now in a Go-Live situation and are forced to upgrade due to functionality available in RU2 or greater. Just some feedback - hopefully helpful.
-Jeff