Check table and its effect in AET - Application Enhancement Tool

Question

Hi fellows,
I created a Z-field using AET, and assigned a check table to it. I did not populate the dropbox values, as I have a check table for the field. As far as I know, a check table for a field means "you cannot enter a value which is not stored in the check table", is that false?
I made my field visible in the configuration, but I am able to enter any value in that field.
For your concern, the check table I assigned to my field is "BUT000". As you can tell, my aim is to restrict a user to enter a value here only by business partner numbers. I did check the structure INCL_EEW_BUT000 too, under the .INCLUDE here comes my new Z-field. When I click on it, it shows that its check table is BUT000, and its domain is BU_PARTNER, which comes with no surprise. Its length is 10 CHAR as well. But in the transaction, I am still able to enter any value there.
Is there any other thing I should be doing?
Thanks,

Answer 1

Closed.
Fyi, I've been testing AET with check table on an IDES system (SAP CRM 7.0). There are oss notes available about AET/check table program errors for SAP CRM 7.0 with correction instructions. In CRM 7.0 EhP1, that issue's been solved. In 7.0 EhP1 if you do exactly as I've done, no problems will occur about populating field values of the check table.