PLS-00320: the declaration of the type of this expression is incomplete or malformed

Cause: In a declaration, the name of a variable or cursor is misspelled or the declaration makes a forward reference. Forward references are not allowed in PL/SQL. A variable or cursor must be declared before it is referenced it in other statements, including other declarative statements. For example, the following declaration of dept_rec raises this exception because it refers to a cursor not yet declared: 

DECLARE 

dept_rec dept_cur%ROWTYPE; 

CURSOR dept_cur IS SELECT ... 

...

Action: Check the spelling of all identifiers in the declaration. If necessary, move the declaration so that it makes no forward references.

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