Error al crear Primary Key

[Chogo]

Esto es lo que tengo

Código SQL [-]
CREATE TABLE DETALLE_PLANILLA 
(   ID_PLANILLA INTEGER NOT NULL,   
CODEMPLEADO INTEGER DEFAULT 0 NOT NULL,   
IDENTIDAD VARCHAR(20) CHARACTER SET NONE COLLATE NONE,   
PROMEDIO_SEMANA NUMERIC(12, 2) DEFAULT 0 NOT NULL,   
HORAS_NOR NUMERIC(3, 2) DEFAULT 0 NOT NULL,   
TOTAL_VALOR_NOR NUMERIC(12, 2) DEFAULT 0 NOT NULL,   
HORAS_EXT1 NUMERIC(3, 2) DEFAULT 0 NOT NULL,   
HORAS_EXT2 NUMERIC(3, 2) DEFAULT 0 NOT NULL,   
HORAS_EXT3 NUMERIC(3, 2) DEFAULT 0 NOT NULL,   
VALOR_EXT1 NUMERIC(12, 2) DEFAULT 0 NOT NULL,   
VALOR_EXT2 NUMERIC(12, 2) DEFAULT 0 NOT NULL,   
VALOR_EXT3 NUMERIC(12, 2) DEFAULT 0 NOT NULL,   
TOTAL_VALOR_EXT NUMERIC(12, 2) DEFAULT 0 NOT NULL,   
FERIADO NUMERIC(12, 2) DEFAULT 0 NOT NULL,   
AJUSTE NUMERIC(12, 2) DEFAULT 0 NOT NULL,   
BONO NUMERIC(12, 2) DEFAULT 0 NOT NULL,   
SABADO NUMERIC(12, 2) DEFAULT 0 NOT NULL,   
DOMINGO NUMERIC(12, 2) DEFAULT 0 NOT NULL,   
BRUTO NUMERIC(12, 2) DEFAULT 0 NOT NULL,   
IHSS NUMERIC(12, 2) DEFAULT 0 NOT NULL,   
ISR NUMERIC(12, 2) DEFAULT 0 NOT NULL,   
TOTAL_DEDUC NUMERIC(12, 2) DEFAULT 0 NOT NULL,   
PAGO_NETO NUMERIC(12, 2) DEFAULT 0 NOT NULL,   
PAGO_NETO_REDONDO NUMERIC(12, 2) DEFAULT 0 NOT NULL,   
IDLINEA INTEGER NOT NULL,   IHSS_EMP NUMERIC(12, 2) DEFAULT 0.0 NOT NULL,   
ID_REG BIGINT DEFAULT 0 NOT NULL);   

ALTER TABLE DETALLE_PLANILLA ADD CONSTRAINT FK_DETALLE_PLANILLA FOREIGN KEY (ID_PLANILLA) REFERENCES MAESTRO_PLANILLA(ID_PLANILLA) ON UPDATE CASCADE;  

ALTER TABLE DETALLE_PLANILLA ADD CONSTRAINT FK_DETALLE_PLANILLA1 FOREIGN KEY (IDLINEA) REFERENCES LINEA(IDLINEA) ON UPDATE CASCADE;  ALTER TABLE 

DETALLE_PLANILLA ADD CONSTRAINT FK_DETALLE_PLANIL_EMPLEADOS FOREIGN KEY (CODEMPLEADO) REFERENCES EMPLEADOS(CODEMPLEADO) ON UPDATE CASCADE;  

CREATE INDEX IDX_CODEMPLEADO ON DETALLE_PLANILLA(CODEMPLEADO);  

CREATE INDEX IDX_IDENTIDAD ON DETALLE_PLANILLA(IDENTIDAD);