PLS-00358

Error: PLS-00358: column 'string' exists in more than one table; use qualifier

Causa: The statement is ambiguous because it specifies two or more tables having the same column name. For example, the following statement is ambiguous because deptno is a column in both tables:

Acción: Precede the column name with the table name (as in emp.deptno) so that the column reference is unambiguous.