Code: PLS-00316
Description:
 PL/SQL TABLEs must use a single index
Cause:
 In the INDEX BY clause of a PL/SQL table declaration, a composite primary
key was specified. PL/SQL tables must have a simple, unnamed primary key of a
binary integer or VARCHAR2 type.
Action:
 In the INDEX BY clause of a PL/SQL table declaration, a composite primary
key was specified. PL/SQL tables must have a simple, unnamed primary key of a
binary integer or VARCHAR2 type.