diff --git a/Elwig/Documents/BusinessDocument.cs b/Elwig/Documents/BusinessDocument.cs
index 86a45e9..c7ecdf4 100644
--- a/Elwig/Documents/BusinessDocument.cs
+++ b/Elwig/Documents/BusinessDocument.cs
@@ -126,7 +126,7 @@ namespace Elwig.Documents {
                     .Item(c.Address).Item($"{c.Plz} {c.Ort}").Item("Österreich").Item("Tel.", c.PhoneNr).Item("Fax", c.FaxNr).NextLine()
                     .Item(c.EmailAddress != null ? link1 : null)
                         .Item(c.Website != null ? link2 : null)
-                        .Item("Betriebs-Nr.", c.LfbisNr).Item("Bio-KSt.", c.OrganicAuthority).NextLine()
+                        .Item("Betriebs-Nr.", c.LfbisNr).Item("Bio-KSt.", c.OrganicAuthorityCode).NextLine()
                     .Item("UID", c.UstIdNr).Item("BIC", c.Bic).Item("IBAN", c.Iban)
                     .ToLeafElements());
         }
diff --git a/Elwig/Helpers/ClientParameters.cs b/Elwig/Helpers/ClientParameters.cs
index e249d95..21c1e6e 100644
--- a/Elwig/Helpers/ClientParameters.cs
+++ b/Elwig/Helpers/ClientParameters.cs
@@ -49,7 +49,8 @@ namespace Elwig.Helpers {
         public string? Bic;
         public string? UstIdNr;
         public string? LfbisNr;
-        public string? OrganicAuthority;
+        public string? OrganicOperatorId;
+        public string? OrganicAuthorityCode;
 
         public string? PhoneNr;
         public string? FaxNr;
@@ -114,7 +115,8 @@ namespace Elwig.Helpers {
                 UstIdNr = parameters.GetValueOrDefault("CLIENT_USTIDNR");
                 Bic = parameters.GetValueOrDefault("CLIENT_BIC");
                 Iban = parameters.GetValueOrDefault("CLIENT_IBAN");
-                OrganicAuthority = parameters.GetValueOrDefault("CLIENT_ORGANIC_AUTHORITY");
+                OrganicOperatorId = parameters.GetValueOrDefault("CLIENT_ORGANIC_OPERATORID");
+                OrganicAuthorityCode = parameters.GetValueOrDefault("CLIENT_ORGANIC_AUTHORITYCODE");
 
                 EnableMemberHistory = (parameters.GetValueOrDefault("ENABLE_MEMBERHISTORY")?.ToUpper()) switch {
                     "1" or "TRUE" or "YES" or "JA" => true,
@@ -273,7 +275,8 @@ namespace Elwig.Helpers {
                 ("CLIENT_USTIDNR", UstIdNr),
                 ("CLIENT_BIC", Bic),
                 ("CLIENT_IBAN", Iban),
-                ("CLIENT_ORGANIC_AUTHORITY", OrganicAuthority),
+                ("CLIENT_ORGANIC_OPERATORID", OrganicOperatorId),
+                ("CLIENT_ORGANIC_AUTHORITYCODE", OrganicAuthorityCode),
                 ("ENABLE_MEMBERHISTORY", EnableMemberHistory ? "YES" : "NO"),
                 ("MODE_BUSINESSSHARES", businessShares),
                 ("MODE_DELIVERYNOTE_STATS", deliveryNoteStats),
diff --git a/Elwig/Resources/Sql/41-42.sql b/Elwig/Resources/Sql/41-42.sql
index 9575535..2b296bf 100644
--- a/Elwig/Resources/Sql/41-42.sql
+++ b/Elwig/Resources/Sql/41-42.sql
@@ -12,3 +12,8 @@ UPDATE member SET org_auth_code = UPPER(suffix) WHERE suffix LIKE 'AT-BIO-___';
 UPDATE wine_cultivation SET organic = TRUE WHERE name LIKE '%bio%' OR name LIKE '%org%' OR description LIKE '%AT-BIO-%';
 UPDATE wine_cultivation SET description = NULL WHERE description LIKE '%AT-BIO-%';
 UPDATE wine_cultivation SET description = 'Biologische Produktion' WHERE organic;
+
+UPDATE client_parameter SET param = 'CLIENT_ORGANIC_AUTHORITYCODE' WHERE param = 'CLIENT_ORGANIC_AUTHORITY';
+
+UPDATE member_telephone_number SET comment = NULL WHERE comment = '';
+UPDATE member_email_address SET comment = NULL WHERE comment = '';
diff --git a/Elwig/Windows/BaseDataWindow.xaml b/Elwig/Windows/BaseDataWindow.xaml
index 921a85d..c76b026 100644
--- a/Elwig/Windows/BaseDataWindow.xaml
+++ b/Elwig/Windows/BaseDataWindow.xaml
@@ -121,12 +121,18 @@
                              VerticalAlignment="Top" HorizontalAlignment="Left" Grid.Column="3" Margin="0,130,10,10" Width="64"
                              TextChanged="LfbisNrInput_TextChanged" LostFocus="LfbisNrInput_LostFocus"/>
 
-                    <Label Content="Bio-Kontrollstelle:"
-                           VerticalAlignment="Top" HorizontalAlignment="Right" Grid.Column="3" Margin="10,130,110,10"/>
-                    <TextBox x:Name="ClientOrganicAuthorityInput"
-                             VerticalAlignment="Top" HorizontalAlignment="Right" Grid.Column="3" Margin="10,130,10,10" Width="90"
+                    <Label Content="Bio-KSt.:" ToolTip="Bio-Konstrollstelle"
+                           VerticalAlignment="Top" HorizontalAlignment="Right" Grid.Column="3" Margin="10,100,110,10"/>
+                    <TextBox x:Name="ClientOrganicAuthorityCodeInput"
+                             VerticalAlignment="Top" HorizontalAlignment="Right" Grid.Column="3" Margin="10,100,10,10" Width="82"
                              TextChanged="OrganicAuthorityCodeInput_TextChanged" LostFocus="OrganicAuthorityCodeInput_LostFocus"/>
 
+                    <Label Content="OOC-ID:" ToolTip="Bio-EU-Operator-ID / Organic Operator Certificate ID"
+                           VerticalAlignment="Top" HorizontalAlignment="Right" Grid.Column="3" Margin="10,130,110,10"/>
+                    <TextBox x:Name="ClientOrganicOperatorIdInput"
+                             VerticalAlignment="Top" HorizontalAlignment="Right" Grid.Column="3" Margin="10,130,10,10" Width="91"
+                             TextChanged="OrganicOperatorIdInput_TextChanged" LostFocus="OrganicOperatorIdInput_LostFocus"/>
+
                     <Label Content="Telefon-Nr.:"
                            VerticalAlignment="Top" HorizontalAlignment="Left" Grid.Column="2" Margin="10,160,0,10"/>
                     <TextBox x:Name="ClientPhoneNrInput" Margin="0,160,10,10" Grid.Column="3"
diff --git a/Elwig/Windows/BaseDataWindow.xaml.cs b/Elwig/Windows/BaseDataWindow.xaml.cs
index 7ce9d2c..a5d9b3c 100644
--- a/Elwig/Windows/BaseDataWindow.xaml.cs
+++ b/Elwig/Windows/BaseDataWindow.xaml.cs
@@ -331,7 +331,8 @@ namespace Elwig.Windows {
             ClientBicInput.Text = p.Bic;
             ClientUstIdNrInput.Text = p.UstIdNr;
             ClientLfbisNrInput.Text = p.LfbisNr;
-            ClientOrganicAuthorityInput.Text = p.OrganicAuthority;
+            ClientOrganicOperatorIdInput.Text = p.OrganicOperatorId;
+            ClientOrganicAuthorityCodeInput.Text = p.OrganicAuthorityCode;
             ClientPhoneNrInput.Text = p.PhoneNr;
             ClientFaxNrInput.Text = p.FaxNr;
             ClientEmailAddressInput.Text = p.EmailAddress;
@@ -371,7 +372,8 @@ namespace Elwig.Windows {
             p.Bic = string.IsNullOrWhiteSpace(ClientBicInput.Text) ? null : ClientBicInput.Text;
             p.UstIdNr = string.IsNullOrWhiteSpace(ClientUstIdNrInput.Text) ? null : ClientUstIdNrInput.Text;
             p.LfbisNr = string.IsNullOrWhiteSpace(ClientLfbisNrInput.Text) ? null : ClientLfbisNrInput.Text;
-            p.OrganicAuthority = string.IsNullOrWhiteSpace(ClientOrganicAuthorityInput.Text) ? null : ClientOrganicAuthorityInput.Text;
+            p.OrganicOperatorId = string.IsNullOrWhiteSpace(ClientOrganicOperatorIdInput.Text) ? null : ClientOrganicOperatorIdInput.Text;
+            p.OrganicAuthorityCode = string.IsNullOrWhiteSpace(ClientOrganicAuthorityCodeInput.Text) ? null : ClientOrganicAuthorityCodeInput.Text;
             p.PhoneNr = string.IsNullOrWhiteSpace(ClientPhoneNrInput.Text) ? null : ClientPhoneNrInput.Text;
             p.FaxNr = string.IsNullOrWhiteSpace(ClientFaxNrInput.Text) ? null : ClientFaxNrInput.Text;
             p.EmailAddress = string.IsNullOrWhiteSpace(ClientEmailAddressInput.Text) ? null : ClientEmailAddressInput.Text;