> The table being edited does not link to any other tables. What should
> appear in the keylinks? What is there purpose?

It's purpose first of all is to identify the unique value or values for
column(s) in the the rows returned so that records in the buffer can be
synchronized with the data on the server. You have performed an action
somewhere that required an individual record/row to be pulled from the
server but it failed to accomplish that due to missing keylinks.

Typically it is the primary key column(s) of the table being selected from.
The rule of thumb is, it has to be unique on the server, not just in the
returned records.

Hope this helps,
Jason Wharton