Masterdata are essential; thus their accuracy is mandatory. A large part of these data are depending on partners, mainly suppliers: they change addresses, telephone, faxes; they discontinue product lines or SKUs [(https://accounts.openerp.com/forum/Help-1/question/7910/)]or just change description etc.

Is there modules or addons to address this major issue?

One can think of giving access to partners to their data into our system, allowing them to make the updates. Of course secured and well delimited access rights must be in place.