how to insert data into mard table through enchancement from MM01 tcode

Hi Experts,

At the time of Material creation from MM01 tcode i need enchancement to
udpate the storage location data in MARD table by checking the plant form MARC table with
our custom table.

And we did not select storage loaction while creating the material,the
strogage data along with the material and plant should insert in the MARD table
by checking the data with the custom table

Please let me Know the enchancement ASAP.

thanks

sivagopal.