Error messages

[Manjula G Kutty]

Hi,

While browsing through the llist of error messages I found some of the 
like below. I don't know the scenario in which those error messages are 
thrown. Can any one give me some example?

28507=User ''{0}'' does not have {1} permission on table ''{2}''.''{3}'' 
for grant.
2850B=User ''{0}'' does not have execute permission on {1} 
''{2}''.''{3}'' for grant.


Thanks
Manjula