Multiple column range partitioning - what is wrong with this example?

Hello,

I try this example:

CREATE TABLE TEST_MULTICOL_PART
(
DAY_WH_ID NUMBER,
START_TIME DATE,
MEAS_VALUE NUMBER
)
TABLESPACE USERS
PARTITION BY RANGE (DAY_WH_ID, START_TIME)
(PARTITION P20250701_00 VALUES LESS THAN (20250702, TO_DATE('2025-07-01 01:00:00', 'YYYY-MM-DD HH24:MI:SS')),
PARTITION P20250701_01 VALUES LESS THAN (20250702, TO_DATE('2025-07-01 02:00:00', 'YYYY-MM-DD HH24:MI:SS')),
PARTITION P20250701_02 VALUES LESS THAN (20250702, TO_DATE('2025-07-01 03:00:00', 'YYYY-MM-DD HH24:MI:SS')),
PARTITION P20250701_03 VALUES LESS THAN (20250702, TO_DATE('2025-07-01 04:00:00', 'YYYY-MM-DD HH24:MI:SS')),
PARTITION P20250701_04 VALUES LESS THAN (20250702, TO_DATE('2025-07-01 05:00:00', 'YYYY-MM-DD HH24:MI:SS')),