arrts not requires on the label  as the invisible will not work for the fields / label
arrts not requires on the label 
as the invisible will not work for the fields / label

and readonly not required ;)

MarkusTeufelberger/openobject-server,MarkusTeufelberger/openobject-server,MarkusTeufelberger/openobject-server,gisce/openobject-server,gisce/openobject-server,splbio/openobject-server,vnc-biz/openerp-server,gisce/openobject-server,splbio/openobject-server,splbio/openobject-server,vnc-biz/openerp-server,xrg/openerp-server,ovnicraft/openerp-server,xrg/openerp-server,ovnicraft/openerp-server