Luana,
Please ensure that /data/data.csv is owned by <sid>adm and a member of the sapsys group. You can ensure this by executing chown <sid>adm:sapsys /data/data.csv. Mostly likely <sid>adm is ndbadm. You should also confirm that you can open /data/data.csv on the Linux server using vi or gedit. The first editor is a console tool, the second is graphical.
Best regards,
Duncan