diff --git a/databases/init/mobility.sql b/databases/init/mobility.sql
index fe503d4..29fd39e 100644
--- a/databases/init/mobility.sql
+++ b/databases/init/mobility.sql
@@ -6,6 +6,5 @@ CREATE TABLE mobility (
     weeksCount          integer,
     destinationCountry  text,
     destinationName     text,
-    mobilityStatus      text default 'N/A',
-    foreign key (studentId) references students(userId)
+    mobilityStatus      text default 'N/A'
 );
\ No newline at end of file
diff --git a/routes/(apps)/mobility/api/insert_mobility.ts b/routes/(apps)/mobility/api/insert_mobility.ts
index 1fb854d..11cd779 100644
--- a/routes/(apps)/mobility/api/insert_mobility.ts
+++ b/routes/(apps)/mobility/api/insert_mobility.ts
@@ -62,10 +62,31 @@ export const handler: Handlers = {
       if (!Array.isArray(data)) {
         throw new Error("Invalid request body");
       }
+
       console.log("Connecting to mobility database...");
-      using connection = connect("mobility"); 
+      using connection = connect("mobility");
       console.log("Connected to databases.");
 
+      const attachedDatabases = connection.database
+        .prepare("PRAGMA database_list")
+        .all();
+      console.log("Attached databases:", attachedDatabases);
+
+      const tablesInMain = connection.database
+        .prepare("SELECT name FROM sqlite_master WHERE type='table'")
+        .all();
+      console.log("Tables in main:", tablesInMain);
+
+      const tablesInStudents = connection.database
+        .prepare("SELECT name FROM students.sqlite_master WHERE type='table'")
+        .all();
+      console.log("Tables in students:", tablesInStudents);
+
+      const testQuery = connection.database
+        .prepare("SELECT COUNT(*) AS count FROM students.students")
+        .get();
+      console.log(`Test query result: Students table has ${testQuery.count} rows.`);
+
       const insertQuery = connection.database.prepare(
         `INSERT INTO mobility (
           id, studentId, startDate, endDate, weeksCount, destinationCountry, destinationName, mobilityStatus
@@ -82,7 +103,7 @@ export const handler: Handlers = {
 
       for (const mobility of data) {
         const {
-          id,
+          id = null,
           studentId,
           startDate,
           endDate,
@@ -92,6 +113,16 @@ export const handler: Handlers = {
           mobilityStatus = "N/A",
         } = mobility;
 
+        console.log(`Checking if studentId ${studentId} exists in students.students`);
+        const studentExists = connection.database
+          .prepare("SELECT COUNT(*) AS count FROM students.students WHERE userId = ?")
+          .get(studentId);
+
+        if (studentExists.count === 0) {
+          console.warn(`Student with ID ${studentId} does not exist. Skipping.`);
+          continue;
+        }
+
         let calculatedWeeksCount = weeksCount;
         if (startDate && endDate) {
           const start = new Date(startDate);