Rounding profile ignored in MRP

Dear gurus,

we have a poblem concerning MRP and Rounding Profile:

We have a material with a Rounding Profile supposed to round up to full purchasing units. Purchasing unit is PAK = 200 pcs.

When we simulate this rounding profile in OWD1, it works just as expected for that material:

From qty [PC]     To Qty [PC]     Rounded Qty – Units [PC]

1                       200                    200

201                   400                     400

401                   401                     600

So far, so good.

Now, in the material master the MRP setting are: Reorder Point 100, Lot size “Replenish to maximum stock level” and maximum stock level is 400, Rounding profile as described above.

So, when we start MRP, we would expect the system to calculate an amount of 350 pcs and then round up to 400 pcs or down to 200 pcs (because if 400 pcs were delivered, the maximum stock level would be exceeded).

But instead, a PR with 350 pcs is created.

Why is this? Does SAP ignore the rounding profile when using lot size “Replenish to maximum stock level”?

Cheers Alicia