Hi everybody,

I have a table, there field Code (Character 6) is made PK. This table contains one blank record (this is by design). Now, each time I'm issuing append blank, I get an Error "Uniqueness of indexes is violated". I'm thinking about adding a default value for this field, but I don't want to use NextID table approach, because this database doen't have a NextID table and I don't want to change it.
Therefore I'm seeking for the idea of a function, which will generate Unique ID automatically (Char 6).

Or may be you have other ideas? Simple way, which was suggested by my manager, just make this index to be regular and deal this checking on the form level. I disagree, because our data is not secure enough, so if somebody will edit this table directly, there is a chance for adding duplicates.

What do you think? I know, it's not recommended to use character PK (meangful), but this table was designed long time ago and I don't want to change it.

Thanks in advance.