Hi Mauricio,
to me it seems that your plants were not created via transaction WB01. Are you working in a retail system? If so, sites have always to be created via WB01.
If that is the case, to correct, you can try (once again) to create the site with WB01 with the same LOCNR. No data should be overwritten. Be sure to choose the correct Site profile for Distribution Center.
If you have the possibility, you first should check in quality assurance system or development system if this will solve your problem.
Hope it helps
Regards
Tobias