I have an AIX filesystem at 100% and I need to increase it by 30gb. Please give me the command to do this. Thanks in advance.

I tried this command and got this error:

chfs -a size=+500M /dev/test1223
0516-404 allocp: This system cannot fulfill the allocation request.
There are not enough free partitions or not enough physical volumes
to keep strictness and satisfy allocation requests. The command
should be retried with different allocation characteristics.

What steps should I take to make this work, and I do mean detailed steps. Thanks.