Toad for Oracle – When I try to run my procedure through the debugger, I get an error that says “PLS-00201: identifier … must be declared”.

Check to see whether you have an object named the same as the owner of the procedure. When this is the case, Oracle thinks that the user name in the anonymous block is actually the object name. We recommend either renaming the problematic object or manually removing the user name from the anonymous block in the Set Parameters window.