MySQL Table partition Error: Table have no partition for value XXX

Partitioning an existing, non-partitioned table

ALTER TABLE Test PARTITION by RANGE (ID) (PARTITION p1 values less THAN (101), PARTITION P2 values less THAN (201))

Prompt error:

Table have no partition for value 201

The reason is that the partition does not contain all the data and is changed to:

ALTER TABLE Test PARTITION by RANGE (ID) (PARTITION p1 values less THAN (1001), PARTITION P2 values less THAN (2001))

Just fine (ID max 1655:2001 small)

MySQL Table partition Error: Table have no partition for value XXX