According to SAP standards there is no field to
maintain the BU_GROUP in the SMOEAC transaction.
So the only solution that we can provide is to :
Kindly write a Z FM where you can delete the values which are
not in that particular number range.You can do so by controlling
the upload trigger, you can add an additional module in transaction
CRMC_BUT_CALL_FU, position > 200000.BUPA_MWX_BDOC_BPS_FILL_CENTRAL.
Within this new module, you can delete all partners within the complex
structure (i.e. ct_bp_struct) that you don't want to upload.
Sorry but this is the only way you can stop the upload as SAP does not
provide any other field to maintain the BU_GROUP number range.