Liew,

You don't need to manually handle the transactions as you are doing in this example. All you need to do is register your one business object as a child of the other business object and the transaction handling happens automatically. All broken rules in any child/grandchild/etc. objects are bubbled up into the parent object and only one error message will be displayed.

For example, in your web form's Load() you can register the business objects like this:

Me.oAddress.RegisterChildBizObj(Me.MyChildBizObj)

Then all you have to do to save is this:

Me.Save(Me.oAddress

Also, make sure the AutoSaveOnParentSaved property of the business objects is set to true. You can set this at the ABusinessObject level so all your business objects behave this way when registered as child objects

Best Regards,