ora-25143 can not change next extent size for locally managed tablespace with uniform size

--can not change next extent size for locally managed tablespace with uniform size.

SYS@FMSP> alter tablespace FMS_CUSTOMER_INDEX default storage (next 1048576);
alter tablespace FMS_CUSTOMER_INDEX default storage (next 1048576)
*
ERROR at line 1:
ORA-25143: default storage clause is not compatible with allocation policy



fms02@/software/orafms/admin/FMSP/bdump> oerr ora 25143
25143, 00000, "default storage clause is not compatible with allocation policy"
// *Cause: default storage clause was specified for a tablespace with
// AUTOALLOCATE or UNIFORM policy
// *Action: Omit the storage clause