Create a new table "account determination"

Dear all,

I need to create some "Fees" materials and affect them to different FI accounts.

I created a new table on V/12 including the field "material group 1" (Define dependencies of revenue account determination)

--> New table  : 991

Then I clicked on "Generate" button, I got the following message :

I'm not able to see my new table on VKOA.

Did I miss something? Do you have any ideas?

Thank you.

Saâd