diff --git a/examples/membership-card.csv b/examples/membership-card.csv
index 5148727..1f4d08d 100644
--- a/examples/membership-card.csv
+++ b/examples/membership-card.csv
@@ -1,2 +1,2 @@
-name	surnames	email	typeOfPerson	membershipType	organisation	validFrom	validUntil	identityDocType	identityNumber
-Pepe	Gómez	user1@example.org	individual	Member	Pangea	01-01-2023			
+name	surnames	email	typeOfPerson	membershipType	organisation	affiliatedSince
+Pepe	Gómez	user1@example.org	individual	Member	Pangea	01-01-2023
diff --git a/idhub/admin/forms.py b/idhub/admin/forms.py
index 7b1bbd7..2917932 100644
--- a/idhub/admin/forms.py
+++ b/idhub/admin/forms.py
@@ -75,8 +75,10 @@ class ImportForm(forms.Form):
         if not data_pd:
             self.exception("This file is empty!")
 
+        properties = self.json_schema['properties']['credentialSubject']['properties']
+        head_row = {x: '' for x in properties.keys()}
         for n in range(df.last_valid_index()+1):
-            row = {}
+            row = head_row.copy()
             for k in data_pd.keys():
                 row[k] = data_pd[k][n] or ''
 
diff --git a/idhub/templates/credentials/membership-card.json b/idhub/templates/credentials/membership-card.json
index dfa6a79..bc315bb 100644
--- a/idhub/templates/credentials/membership-card.json
+++ b/idhub/templates/credentials/membership-card.json
@@ -20,6 +20,8 @@
       "lang": "https://gitea.pangea.org/trustchain-oc1-orchestral/schemas/contexts/vocab#lang",
       "surnames": "https://gitea.pangea.org/trustchain-oc1-orchestral/schemas/contexts/vocab#surnames",
       "email": "https://gitea.pangea.org/trustchain-oc1-orchestral/schemas/contexts/vocab#email",
+      "affiliatedSince": "https://gitea.pangea.org/trustchain-oc1-orchestral/schemas/contexts/vocab#affiliatedSince",
+      "affiliatedUntil": "https://gitea.pangea.org/trustchain-oc1-orchestral/schemas/contexts/vocab#affiliatedUntil",
       "issued": "https://ec.europa.eu/digital-building-blocks/wikis/display/EBSIDOC/Verifiable+Attestation#issued",
       "validFrom": "https://ec.europa.eu/digital-building-blocks/wikis/display/EBSIDOC/Verifiable+Attestation#validFrom",
       "validUntil": "https://ec.europa.eu/digital-building-blocks/wikis/display/EBSIDOC/Verifiable+Attestation#validUntil"
@@ -87,9 +89,11 @@
     "organisation": "Pangea",
     "membershipType": "{{ membershipType }}",
     "membershipId": "{{ vc_id }}",
-    "AffiliatedFrom": "{{ AffiliatedFrom }}",
-    "AffiliatedUntil": "{{ AffiliatedUntil }}",
+    "affiliatedSince": "{{ affiliatedSince }}",
+    "affiliatedUntil": "{{ affiliatedUntil }}",
     "typeOfPerson": "{{ typeOfPerson }}",
+    "identityDocType": "{{ identityDocType }}",
+    "identityNumber": "{{ identityNumber }}",
     "name": "{{ first_name }}",
     "surnames": "{{ last_name }}",
     "email": "{{ email }}",
diff --git a/idhub/user/forms.py b/idhub/user/forms.py
index 173f3a8..53a1149 100644
--- a/idhub/user/forms.py
+++ b/idhub/user/forms.py
@@ -44,7 +44,10 @@ class RequestCredentialForm(forms.Form):
 
         did = did[0].did
         cred = cred[0]
-        cred.issue(did)
+        try:
+            cred.issue(did)
+        except Exception:
+            return
 
         if commit:
             cred.save()
diff --git a/schemas/membership-card.json b/schemas/membership-card.json
index dcaa00d..0d5ff9a 100644
--- a/schemas/membership-card.json
+++ b/schemas/membership-card.json
@@ -14,11 +14,11 @@
         "membershipType": {
           "type": "string"
         },
-        "AffiliatedFrom": {
+        "affiliatedSince": {
           "type": "string",
           "format": "date-time"
         },
-        "AffiliatedUntil": {
+        "affiliatedUntil": {
           "type": "string",
           "format": "date-time"
         },
@@ -54,6 +54,7 @@
       },
       "required": [
         "organisation",
+        "affiliatedSince",
         "typeOfPerson",
         "name",
         "surnames",