OTC-Veranstaltungen eindeutig verknüpfen und Fehler sichtbar halten

modules/market_management/service.php

@@ -357,7 +357,7 @@ function market_management_search_occurrences(PDO $pdo, array $input): array
 function market_management_list_active_occurrence_options(PDO $pdo): array
 {
     $stmt = $pdo->query(
-        'SELECT o.id AS occurrence_id, m.name AS market_name, o.status,
+        'SELECT o.id AS occurrence_id, o.market_definition_id, m.name AS market_name, o.status,
                 d.id AS day_id, d.date
          FROM market_occurrence o
          INNER JOIN market_definition m ON m.id = o.market_definition_id