Reg : SUS-MM 'Message to Purchaser' field unavailable in MM-SUS scenario

Hi Team,

i have implemented Note 0000761150 in ECC Side and 0001342975 in SRM Side.

The requirement is that when ever the user rejects the PO's in SRM SUS which is created from ECC it should show the Message to Purchaser Screen to send the reason for rejection.

But Still for the PO created from ECC , while rejecting that " Message to Purchaser " window is not appearing to type the reason for rejection.

I have debugged it and found why its not appearing.

But i don't think so its a problem with Standard coding in the Method DO_REQUEST of the class CL_SUS_C_ORDER_DETAIL_EDIT.

What will be the possible reason for the window is not appearing?

Please suggest me.

Thanks!

Karthik.s