Oracle Message ORA-14126 - only a may follow description(s) of resulting partitions

ERROR	only a may follow description(s) of resulting partitions
CAUSE	Descriptions of partition(s) resulting from splitting of a table or index partition may be followed by an optional which applies to the entire statement and which, in turn, may not be followed by any other clause.
ACTION	Ensure that all partition attributes appear within the parenthesized list of descriptions of resulting partitions in ALTER TABLE/INDEX SPLIT PARTITION statement.