I'm getting an Error 201 in one of my Program Units. The code is as follows:
function CF_revisionFormula return VARCHAR2 is
rev_flag varchar2(1) := ' ';
select 'R' into rev_flag
where :op_id = operation_notes.op_id and
on_type_cd = 'T' and
rownum = 1;
RETURN NULL; exception
when others then return (' ');
The error I receive is: Error 201 at line 5, column 10 identifier 'OPERATION_NOTES' must be declared
Error 0 at line 4, column 3 SQL Statement ignored.
I have other Program Units for other reports coded in the same mannor and I don't get an error on them. Where should I start looking for the problem?