Error during posting in Payment Journal

HI,
      when am trying to post a  Payment Journal  it is showing error 

For this i was changed the buffer size.then the problem was solved.
in the AOS Configuration on the Database Tuning tab is specified

• Max Buffer size was set to 30

The default Maximum Buffer size: 24 (KB) but it will show as blank.in this case suppose we have more select statement for getting values buffer is not sufficient to give result.

It is quite common to increase the maximum buffer size to solve these type of problems.