LSMW - Field for Tax classification material

Hi All,

Material Upload through Direct Input Method of LSMW,

Sales Org 1 view, we have 4 tax classification fields(inputs). For Material Upload, i need field name for this tax classification field.

But Tecnical info(F1), it shows only one field name for all 4 fields is TAXKM.

How to MAP these fields with SAP fields please.

Thanks & Regards