ORA-15041: diskgroup "DATA" space exhausted

 Hello all,             I got this error when trying the extend a tablespaces. ASM Diskgroup shows there's some space left, but even though that I am not being able to extend the tablespace:

I am missing something but I am not getting to know what it is.

SQL> select name, total_mb, free_mb, state from v$asm_disk;

NAME                                                                                         TOTAL_MB    FREE_MB STATE

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DATA_0001                                                                                       51199          8 NORMAL

DATA_0000                                                                                      153597     102405 NORMAL

SQL> select name, TOTAL_MB, FREE_MB, USABLE_FILE_MB, state from v$asm_diskgroup;

NAME                                                                                         TOTAL_MB    FREE_MB USABLE_FILE_MB STATE

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