EdbEngineError - Record/Key deleted

I am developing a prototype Delphi 2.0 application using ODBC_Access
database, I regularly get EDbEngineError with different messages. Is there
a comprehensive list of the messages that might occur and what they mean -
I have looked in the discussion forums, documentation and Usenet and can't
find a thing.

Secondly, the current problem I have is a Record/Key deleted message - what
does this mean, it occurs when an new record is posted to a table with
single index (an automatically generated number).

Help would be much appreciated