Give the high level user the possiblity to find out what was the last criteria on creating that message.

Source:
if (Custtable.MField1 >10 && CustGroup::find(custtable.custgroup).CustGroupField7 == "")
{
ret = checkfailed("Please enter right data. On my nothing explaining warning ;-) Try by yourself to solve.");
}


If the experienced user has the possibility to see the last "IF" - statement which was executed before the checkfailed, error or warning it is possible to understand what data are wrong or checked to generate the message to the user.

On clicking of a "Experienced message information" option in the warning the text in a new line is shown:
Last Criteria was: if (Custtable.MField1 >10 && CustGroup::find(custtable.custgroup).CustGroupField7 == "")

+ Last Line of Stack Trace information where it was...

Most of the 1st Level Supporters are able to read sourcecode!
But without information it is not possible to support.