In ACE Personalization/Options/Lookup/Keys, you'll find the Department Lookup keys. The "ID" 1 corresponds to Code 200, ID 2 = 201, 3 = 202, etc. So, the first 9 are working, so you'll go to ID 10, which corresponds to Code 209, and enter the PLU of your desired department key ring in the Lookup Key field.
THEN, in your Keyboard definition (adxkbf02), you'll need to provide a Key for that code 209.
Save/Activate and reload the terminal.
It should then be that the Key represented by 209 in your Keyboard Layout, will ring to that Department!