Some times we will get an error
Attempt to set a parameter name that does not occur in the SQL : BindvariableName
This error comes when we have a bind variable that is not using in SQL query but using in View Criteria with required as true.
So it's a thumb rule we need to remember is that
If we are using the bind variable in SQL Query of View Object then only we need to check the required check box.
If we are not using in SQL Query but using in View Criteria it should unchecked.
So to get rid of this error uncheck required check box
Thanks
Krishna
