Hi,
Please 0sold_to master data attributes.
is it reference of 0customer or some other info object.
0customer_Attr data source fields you can check at source side table ROOSFIELD.
if 0db_matcds is part of your data source then it must be hidden(Field SELECTION = A at table ROOSFIELD) by sap.
thru abap program we can make it as visible at RSA6.
info object 0DB_MATCDS is part of attributes to 0sold_to.
so please check 0sold_to is reference to 0customer or some other info object.
if its some other info object then you need to use that one.
Thanks