How to change the order-unit of a PR

Hi,

We have a very peculiar issue we are trying to resolve. Consider this situation:

- Purchase Unit of Measure (PUoM) = CS = 3 EA

- Base unit of measure = EA

- Purchase unit of measure is set to Active

When I create a PR for 1 EA, the source of supply is determined and the order unit is set to CS (as per above). When I create the PO for this PR, it is created for 0.333 CS. But my unit of measure CS does not accept decimal places.

I need to find a way to overwrite the order unit of the PR to be EA instead of CS (since the PUoM is set to Active). The vendor accepts that we purchase in EA instead of CS sometimes.

Any ideas how I can do this ? Which user exit/enhancemnt spot/BADI can be used ?

Thanks,

Sevin