Upload Material Master using LSMW BAPI BUS1001006-SaveData

Hi Gurus,

I'm working with material master upload using the BAPI BUS1001006-SaveData.

I'm wondering on how can I know what structure should I populate on step 4 of LSMW "Maintain Field Mapping and Conversion Rules".

Seen some tutorials on material master upload but it wasn't explained there why or what structure should be populated..

Thanks and Regards.