To answer this question you need to know the publisher's policy on open access. You can see the publishers' policies at the Sherpa-Romeo website, or at Dulcinea for Spanish journals.
Before moving your publications from Senia to RiuNet, the Library checks the publishing policy for each article and acts accordingly. In some cases, the publisher does not allow the publisher version of the article to be uploaded to the repository, but it does allow a "personal" version called an "author's version". When this is the case, the Library will ask you to upload the author's version of your publication to Senia.