diff --git a/Kernel/Modules/CustomerTicketProcess.pm b/Kernel/Modules/CustomerTicketProcess.pm
index 51ae072d0c..c83b8486a3 100644
--- a/Kernel/Modules/CustomerTicketProcess.pm
+++ b/Kernel/Modules/CustomerTicketProcess.pm
@@ -3082,11 +3082,11 @@ sub _StoreActivityDialog {
     # call ticket ACLs for DynamicFields to check field visibility
     my $ACLResult = $TicketObject->TicketAcl(
         $Param{GetParam}->%*,
-        Action        => $Self->{Action},
-        ReturnType    => 'Form',
-        ReturnSubType => '-',
-        Data          => \%DynamicFieldAcl,
-        UserID        => $Self->{UserID},
+        Action         => $Self->{Action},
+        ReturnType     => 'Form',
+        ReturnSubType  => '-',
+        Data           => \%DynamicFieldAcl,
+        CustomerUserID => $Self->{UserID},
     );
     if ($ACLResult) {
         %Visibility = map { 'DynamicField_' . $_->{Name} => 0 } @{$DynamicField};
@@ -3154,11 +3154,11 @@ sub _StoreActivityDialog {
                     # set possible values filter from ACLs
                     my $ACL = $TicketObject->TicketAcl(
                         $Param{GetParam}->%*,
-                        Action        => $Self->{Action},
-                        ReturnType    => 'Ticket',
-                        ReturnSubType => 'DynamicField_' . $DynamicFieldConfig->{Name},
-                        Data          => \%AclData,
-                        UserID        => $Self->{UserID},
+                        Action         => $Self->{Action},
+                        ReturnType     => 'Ticket',
+                        ReturnSubType  => 'DynamicField_' . $DynamicFieldConfig->{Name},
+                        Data           => \%AclData,
+                        CustomerUserID => $Self->{UserID},
                     );
                     if ($ACL) {
                         my %Filter = $TicketObject->TicketAclData();
@@ -3392,7 +3392,6 @@ sub _StoreActivityDialog {
 
         # some fields should be skipped for the customer interface
         next DIALOGFIELD if ( grep { $_ eq $CurrentField } @{$SkipFields} );
-        my $FieldNameShort = substr( $CurrentField, length('DynamicField_') );
 
         if ( !IsHashRefWithData( $ActivityDialog->{Fields}->{$CurrentField} ) ) {
             $LayoutObject->CustomerFatalError(