How to update Physical Inventory Block (MARD-SPERR)

Hi,

Can anyone tell which BAPI updates the Physical Inventory Block (MARD-SPERR) in MM03.

Tried with "BAPI_MATERIAL_SAVEDATA" with the following input,

HEADDATA-MATERIAL = MATNR

STORAGELOCATIONDATA-

                                        PLANT          = plant

                                        STGE_LOC   = storage location

                                        DEL_FLAG    = X

STORAGELOCATIONDATAX-

                                        PLANT          = plant

                                        STGE_LOC    = storage location

                                        DEL_FLAG     = X

Getting the success message in RETURN table as "The material (MATNR) has been created or extended"

But the SPERR field is not updated in MARD.

Please advice

Regards,

Raaja