Hi,
Came across limitation on SAP & Ariba integration for split accounting. When PR cost is split among different cost objects (amount based) and the amount has decimal points (of course). It gives rounding error when creating PO in SAP.
So far, we are struggling with the issue but work around is that the split accounting need to have whole numbers (Provided, you are creating a PR for those materials which have exact price without decimal points). I am sure you would need to work with suppliers to make price changes 
Any solution?
Regards,
Ravi Pachauri