Thanks Mr. Nagarajan,
Will take this up adding all of your suggestion with the vendor.
But I think SAP also should give it a thought. When a software is multiuser, access should also be multiuser and a saving procedure should be in place like other mutiuser environment based software. The first person, clicking save button should get the data updated first, followed by the next one and till such time the next person, should get a message saying, wait till the system updates till first one's changes. And this should happen in fractions.
Regards,
Vinit Parikh