diff --git a/angular/openapi.yaml b/angular/openapi.yaml
index 66f2115..ce7dc3b 100644
--- a/angular/openapi.yaml
+++ b/angular/openapi.yaml
@@ -4571,7 +4571,6 @@ components:
           format: iri-reference
           example: 'https://example.com/'
         pilotageReference:
-          readOnly: true
           type:
             - string
             - 'null'
@@ -4664,7 +4663,6 @@ components:
           format: iri-reference
           example: 'https://example.com/'
         pilotageReference:
-          readOnly: true
           type:
             - string
             - 'null'
diff --git a/angular/src/app/_helpers/error.interceptor.ts b/angular/src/app/_helpers/error.interceptor.ts
index d914796..eb44170 100644
--- a/angular/src/app/_helpers/error.interceptor.ts
+++ b/angular/src/app/_helpers/error.interceptor.ts
@@ -28,7 +28,7 @@ export class ErrorInterceptor implements HttpInterceptor {
                     this.accountService.logout();
                 }
                 console.log(err);
-                this.alertService.error(err.message + ' - ' + err.error);
+                this.alertService.error(err.error.detail);
 
                 const error = err.error?.message || err.statusText;
                 return throwError(() => error);
diff --git a/angular/src/app/_views/trip/trip-form/trip-form.component.html b/angular/src/app/_views/trip/trip-form/trip-form.component.html
index 092074b..8ac7fbb 100644
--- a/angular/src/app/_views/trip/trip-form/trip-form.component.html
+++ b/angular/src/app/_views/trip/trip-form/trip-form.component.html
@@ -11,6 +11,10 @@
     <div class="spt-form">
         <form [formGroup]="tripForm" (ngSubmit)="onSubmit()">
             <div class="row">
+                <div class="col-12 col-lg-6 mb-3">
+                    <label for="pilotageReference" class="form-label">{{ 'trip.pilot_reference' | translate }}:</label>
+                    <input type="text" class="form-control" id="pilotageReference" formControlName="pilotageReference"/>
+                </div>
                 <div class="col-12 mb-3">
                     <label for="vesselIri" class="form-label">{{ 'trip.vessel' | translate }}*:</label>
                     <app-search-select #vesselSearchSelect
diff --git a/angular/src/app/core/api/v1/model/trip.ts b/angular/src/app/core/api/v1/model/trip.ts
index c3f5f50..b04d3b0 100644
--- a/angular/src/app/core/api/v1/model/trip.ts
+++ b/angular/src/app/core/api/v1/model/trip.ts
@@ -18,7 +18,7 @@ export interface Trip {
     readonly dbId?: number | null;
     readonly vessel?: string;
     vesselIri: string | null;
-    readonly pilotageReference?: string | null;
+    pilotageReference?: string | null;
     readonly startLocation?: string;
     startLocationIri: string | null;
     readonly endLocation?: string;
diff --git a/angular/src/app/core/api/v1/model/tripJsonld.ts b/angular/src/app/core/api/v1/model/tripJsonld.ts
index 68f6297..ea798e2 100644
--- a/angular/src/app/core/api/v1/model/tripJsonld.ts
+++ b/angular/src/app/core/api/v1/model/tripJsonld.ts
@@ -23,7 +23,7 @@ export interface TripJsonld {
     readonly dbId?: number | null;
     readonly vessel?: VesselJsonld;
     vesselIri: string | null;
-    readonly pilotageReference?: string | null;
+    pilotageReference?: string | null;
     readonly startLocation?: LocationJsonld;
     startLocationIri: string | null;
     readonly endLocation?: LocationJsonld;
diff --git a/httpdocs/config/packages/lexik_jwt_authentication.yaml b/httpdocs/config/packages/lexik_jwt_authentication.yaml
index 61c5542..709b911 100644
--- a/httpdocs/config/packages/lexik_jwt_authentication.yaml
+++ b/httpdocs/config/packages/lexik_jwt_authentication.yaml
@@ -2,4 +2,4 @@ lexik_jwt_authentication:
     secret_key: '%env(resolve:JWT_SECRET_KEY)%'
     public_key: '%env(resolve:JWT_PUBLIC_KEY)%'
     pass_phrase: '%env(JWT_PASSPHRASE)%'
-    token_ttl: 1209600 
\ No newline at end of file
+    token_ttl: 7776000
\ No newline at end of file
diff --git a/httpdocs/migrations/Version20250730143720.php b/httpdocs/migrations/Version20250730143720.php
new file mode 100644
index 0000000..eea1c34
--- /dev/null
+++ b/httpdocs/migrations/Version20250730143720.php
@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20250730143720 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return '';
+    }
+
+    public function up(Schema $schema): void
+    {
+        // this up() migration is auto-generated, please modify it to your needs
+        $this->addSql('ALTER TABLE trip ADD pilotage_reference VARCHAR(255) NOT NULL');
+    }
+
+    public function down(Schema $schema): void
+    {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->addSql('ALTER TABLE trip DROP pilotage_reference');
+    }
+}
diff --git a/httpdocs/src/ApiResource/TripApi.php b/httpdocs/src/ApiResource/TripApi.php
index 132f977..2218f13 100644
--- a/httpdocs/src/ApiResource/TripApi.php
+++ b/httpdocs/src/ApiResource/TripApi.php
@@ -78,7 +78,7 @@ class TripApi
     #[ApiProperty(writable: true)]
     public ?VesselApi $vesselIri = null;
 
-    #[ApiProperty(writable: false)]
+    #[ApiProperty(writable: true)]
     public ?string $pilotageReference = null;
 
     /**
diff --git a/httpdocs/src/Command/Patch/Patch001Command.php b/httpdocs/src/Command/Patch/Patch001Command.php
new file mode 100644
index 0000000..17e13b8
--- /dev/null
+++ b/httpdocs/src/Command/Patch/Patch001Command.php
@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Command\Patch;
+
+use App\Entity\Event;
+use App\Entity\Trip;
+use Doctrine\ORM\EntityManagerInterface;
+use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+#[AsCommand(
+    name: 'app:patch-001',
+    description: 'Creates pilotage references'
+)]
+class Patch001Command extends Command
+{
+
+    public function __construct(
+        private readonly EntityManagerInterface $entityManager
+    ) {
+        parent::__construct();
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output): int
+    {
+        $trips = $this->entityManager->getRepository(Trip::class)->findAll();
+
+        foreach ($trips as $trip) {
+            $trip->setPilotageReference("P-" . $trip->getId() . "-" . $trip->getStartDate()->format('Y'));
+        }
+
+        $this->entityManager->flush();
+        return Command::SUCCESS;
+    }
+}
\ No newline at end of file
diff --git a/httpdocs/src/Entity/Trip.php b/httpdocs/src/Entity/Trip.php
index ac73847..ae8a143 100644
--- a/httpdocs/src/Entity/Trip.php
+++ b/httpdocs/src/Entity/Trip.php
@@ -18,6 +18,9 @@ class Trip
     #[ORM\Column]
     private ?int $id = null;
 
+    #[ORM\Column(length: 255, unique: true)]
+    private ?string $pilotageReference = null;
+
     #[ORM\ManyToOne(targetEntity: Vessel::class, inversedBy: 'trips')]
     #[ORM\JoinColumn(nullable: false)]
     private Vessel $vessel;
@@ -74,25 +77,25 @@ class Trip
         return $this->id;
     }
 
-    public function getVessel(): Vessel
+    public function getPilotageReference(): ?string
     {
-        return $this->vessel;
+        return $this->pilotageReference;
     }
 
-    public function setVessel(Vessel $vessel): self
+    public function setPilotageReference(string $pilotageReference): void
     {
-        $this->vessel = $vessel;
-        return $this;
+        $this->pilotageReference = $pilotageReference;
     }
 
-    public function getCustomerReference(): ?string
+    public function getVessel(): Vessel
     {
-        return $this->customerReference;
+        return $this->vessel;
     }
 
-    public function setCustomerReference(?string $customerReference): void
+    public function setVessel(Vessel $vessel): self
     {
-        $this->customerReference = $customerReference;
+        $this->vessel = $vessel;
+        return $this;
     }
 
     public function getStartLocation(): Location
diff --git a/httpdocs/src/Mapper/TripApiToEntityMapper.php b/httpdocs/src/Mapper/TripApiToEntityMapper.php
index 66c3f2d..263a379 100644
--- a/httpdocs/src/Mapper/TripApiToEntityMapper.php
+++ b/httpdocs/src/Mapper/TripApiToEntityMapper.php
@@ -7,6 +7,7 @@ use App\Entity\Trip;
 use App\Repository\TripRepository;
 use App\Repository\VesselRepository;
 use App\Repository\LocationRepository;
+use Symfony\Component\Validator\Exception\ValidatorException;
 use Symfonycasts\MicroMapper\AsMapper;
 use Symfonycasts\MicroMapper\MapperInterface;
 use Symfonycasts\MicroMapper\MicroMapperInterface;
@@ -77,6 +78,19 @@ class TripApiToEntityMapper implements MapperInterface
         $entity->setEndDate($dto->endDate);
         $entity->setNote($dto->note);
 
+        if ($dto->pilotageReference !== $entity->getPilotageReference()) {
+            $existingTrip = $this->repository->findOneBy(['pilotageReference' => $dto->pilotageReference]);
+
+            if ($existingTrip !== null) {
+                throw new ValidatorException(sprintf(
+                    'A trip with the pilotage reference "%s" already exists.',
+                    $dto->pilotageReference
+                ));
+            }
+
+            $entity->setPilotageReference($dto->pilotageReference);
+        }
+
         if ($dto->vesselIri->id) {
             $vessel = $this->vesselRepository->find($dto->vesselIri->id);
             if (!$vessel) {
diff --git a/httpdocs/src/Mapper/TripEntityToApiMapper.php b/httpdocs/src/Mapper/TripEntityToApiMapper.php
index d30605b..deafcb9 100644
--- a/httpdocs/src/Mapper/TripEntityToApiMapper.php
+++ b/httpdocs/src/Mapper/TripEntityToApiMapper.php
@@ -37,7 +37,7 @@ class TripEntityToApiMapper implements MapperInterface
         assert($dto instanceof TripApi);
 
         $dto->dbId = $entity->getId();
-        $dto->pilotageReference = "P-" . $entity->getId() . "-" . $entity->getStartDate()->format('Y');
+        $dto->pilotageReference = $entity->getPilotageReference();
         $dto->startDate = $entity->getStartDate();
         $dto->endDate = $entity->getEndDate();
         $dto->note = $entity->getNote();