diff --git a/wrappers/do_share_onedata.py b/wrappers/do_share_onedata.py
index 95c38da1457a7f1955b61cdd1e61b5b0abc74017..595a29da11cada02e4f818686e96ef6975de05b9 100644
--- a/wrappers/do_share_onedata.py
+++ b/wrappers/do_share_onedata.py
@@ -36,6 +36,13 @@ OneData_FolderLevel0_id = ""
 catalog_path_temp = ""    # LOCAL FOLDER TO SAVE THE XML FILES
 OneData_handleServiceId = ""
 
+# Data for dublin core format
+xmlns_oaci_dc = '"http://www.openarchives.org/OAI/2.0/oai_dc/"'
+xmlns_dc = '"http://purl.org/dc/elements/1.1/"'
+xmlns_xsi = '"http://www.w3.org/2001/XMLSchema-instance"'
+xsi_schemaLocation = '"http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd"'
+oai_dc_content = 'xmlns:oai_dc=' + xmlns_oaci_dc + ' xmlns:dc=' + xmlns_dc + ' xmlns:xsi=' + xmlns_xsi + ' xsi:schemaLocation=' + xsi_schemaLocation
+
 
 # own functions
 
@@ -178,6 +185,7 @@ def folder1_getattrs (handleservice_id, local_path, folder1_id, host, token):
                     print(allinfo_level1['handleId'])
                 else:
                     print('creating handle')
+                    # UNCOMMENT FOR CREATING ALL MISSING HANDLES (NOT TESTED)
                     #OneData_createhandle(handleservice_id, allinfo_level1['shareId'], local_path, allinfo_level1['name'], host, token)
                 
             else:
@@ -208,44 +216,45 @@ for p in all_level0['children']:
             doc, tag, text = Doc().tagtext()
             
             with tag('metadata'):
-                with tag('dc:title'):
-                    text(all_level1['title'])
-                with tag('dc:creator'):
-                    text(all_level1["creator"]['@id'])
-                with tag('dc:date'):
-                    text(all_level1["@graph"][1]['prov:endedAtTime'])
-                with tag('dc:subject'):
-                    text('High energy astrophysics')
-                with tag('dc:subject'):
-                    text('http://astrothesaurus.org/uat/739')
-                with tag('dc:subject'):
-                    text('Particle astrophysics')
-                with tag('dc:subject'):
-                    text('http://astrothesaurus.org/uat/96')
-                with tag('dc:subject'):
-                    text('Astronomical simulations')
-                with tag('dc:subject'):
-                    text('http://astrothesaurus.org/uat/1857')
-                with tag('dc:rights'):
-                    text('CC BY 4.0')
-                with tag('dc:rights'):
-                    text('https://creativecommons.org/licenses/by/4.0/')
-                with tag('dc:rights'):
-                    text('LAGO rights')
-                with tag('dc:rights'):
-                    text('https://raw.githubusercontent.com/lagoproject/DMP/1.1/rights/lagoCommonRights.jsonld')
-                with tag('dc:description'):
-                    text(all_level1["description"])
-                with tag('dc:contributor'):
-                    text('EGI Datahub')
-                with tag('dc:instrument'):
-                    text('LAGO Observatory')
-                with tag('dc:contact'):
-                    text('lago-eosc(at)lagoproject.net')
-                with tag('dc:discipline'):
-                    text('Astrophysics and Astronomy')
-                with tag('dc:publisher'):
-                    text('LAGO Collaboration')
+                with tag('oai_dc:dc', oai_dc_content):
+                    with tag('dc:title'):
+                        text(all_level1['title'])
+                    with tag('dc:creator'):
+                        text(all_level1["creator"]['@id'])
+                    with tag('dc:date'):
+                        text(all_level1["@graph"][1]['prov:endedAtTime'])
+                    with tag('dc:subject'):
+                        text('High energy astrophysics')
+                    with tag('dc:subject'):
+                        text('http://astrothesaurus.org/uat/739')
+                    with tag('dc:subject'):
+                        text('Particle astrophysics')
+                    with tag('dc:subject'):
+                        text('http://astrothesaurus.org/uat/96')
+                    with tag('dc:subject'):
+                        text('Astronomical simulations')
+                    with tag('dc:subject'):
+                        text('http://astrothesaurus.org/uat/1857')
+                    with tag('dc:rights'):
+                        text('CC BY 4.0')
+                    with tag('dc:rights'):
+                        text('https://creativecommons.org/licenses/by/4.0/')
+                    with tag('dc:rights'):
+                        text('LAGO rights')
+                    with tag('dc:rights'):
+                        text('https://raw.githubusercontent.com/lagoproject/DMP/1.1/rights/lagoCommonRights.jsonld')
+                    with tag('dc:description'):
+                        text(all_level1["description"])
+                    with tag('dc:contributor'):
+                        text('EGI Datahub')
+                    with tag('dc:instrument'):
+                        text('LAGO Observatory')
+                    with tag('dc:contact'):
+                        text('lago-eosc(at)lagoproject.net')
+                    with tag('dc:discipline'):
+                        text('Astrophysics and Astronomy')
+                    with tag('dc:publisher'):
+                        text('LAGO Collaboration')
 
             result = indent(
                 doc.getvalue(),