What is the code on which quick find is working? I need to find the quick find is not able to pick up an account for an user, though it is visible for me.

I believe that the code is not available for Edit (or View) on the Architect.

As an alternative, you should use the SLX Profiler to view the Actual SQL Statement generated when the user searches for this record, and then take it appart until you determine what is causing the problem.

The most likely cause would be security access (due to the Ownership of the record).

You could try the following:

SELECT * FROM ACCOUNT WHERE ACCOUNTID = 'THE_ID_FOR_THE_AFFECTED_ACCOUNT'

Then apply security to it (via the Account_ View):

SELECT * FROM ACCOUNT_ WHERE ACCOUNTID = 'THE_ID_FOR_THE_AFFECTED_ACCOUNT' AND ACCESSID_ = 'THE_ID_OF_THE_USER_WHO_CANT_SEE_THE_RECORD'

If the account returns on the top query but not on the second query, then it is a security issue.