COPA: Derivation Logic from AUSP (Material Classification)

Dear expert,

I'm creating derivation rule to get 'Brand' from Material Classification. Here is the logic:

SOURCE

AUSP-OBJEK map to CO-PA-ARTNR
AUSP-ATINN map to USERTEMP1 (fixed 0000000840 which is Brand')

AUSP-ATZHL map to USERTEMP2 (fixed '001')
AUSP-MAFID map to USERTEMP3 (fixed 'O')
AUSP-KLART map to USERTEMP4 (fixed '001')
AUSP-ADZHL map to USERTEMP5 (fixed '0000')

Target

AUSP-ATWRT map to COPA-WWXXX

Here is data in the table AUSP:

But when I test derivation, no value could be found.

Is there anyone used to write derivation rule from AUSP? Please suggest

Best regards,
JK