A DDL statement was issued that would require creation of a new subpartition in one of the partition-level default tablespaces of an existing composite partitioned object. However, the partition-level default tablespace block size does not match the block size of the partitioned object.
Ensure that all tablespaces specified in the DDL command for the given object as well as any tablespaces implicitly assigned to partitions or subpartitions of the object being created are all of the same block size.
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/e12700.htm
https://community.oracle.com/message/4506078
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