diff --git a/src/Entity/Attachments/Attachment.php b/src/Entity/Attachments/Attachment.php
index ea06b1f3..a7c03504 100644
--- a/src/Entity/Attachments/Attachment.php
+++ b/src/Entity/Attachments/Attachment.php
@@ -57,7 +57,7 @@ use LogicException;
 #[ORM\Entity(repositoryClass: AttachmentRepository::class)]
 #[ORM\InheritanceType('SINGLE_TABLE')]
 #[ORM\DiscriminatorColumn(name: 'class_name', type: 'string')]
-#[ORM\DiscriminatorMap(self::DISCRIMINATOR_MAP)]
+#[ORM\DiscriminatorMap(self::ORM_DISCRIMINATOR_MAP)]
 #[ORM\EntityListeners([AttachmentDeleteListener::class])]
 #[ORM\Table(name: '`attachments`')]
 #[ORM\Index(name: 'attachments_idx_id_element_id_class_name', columns: ['id', 'element_id', 'class_name'])]
@@ -85,16 +85,24 @@ use LogicException;
 #[ApiFilter(DateFilter::class, strategy: DateFilter::EXCLUDE_NULL)]
 #[ApiFilter(OrderFilter::class, properties: ['name', 'id', 'addedDate', 'lastModified'])]
 //This discriminator map is required for API platform to know which class to use for deserialization, when creating a new attachment.
-#[DiscriminatorMap(typeProperty: '_type', mapping: self::DISCRIMINATOR_MAP)]
+#[DiscriminatorMap(typeProperty: '_type', mapping: self::API_DISCRIMINATOR_MAP)]
 abstract class Attachment extends AbstractNamedDBElement
 {
-    private const DISCRIMINATOR_MAP = ['PartDB\Part' => PartAttachment::class, 'Part' => PartAttachment::class,
+    private const ORM_DISCRIMINATOR_MAP = ['PartDB\Part' => PartAttachment::class, 'Part' => PartAttachment::class,
         'PartDB\Device' => ProjectAttachment::class, 'Device' => ProjectAttachment::class, 'AttachmentType' => AttachmentTypeAttachment::class,
         'Category' => CategoryAttachment::class, 'Footprint' => FootprintAttachment::class, 'Manufacturer' => ManufacturerAttachment::class,
         'Currency' => CurrencyAttachment::class, 'Group' => GroupAttachment::class, 'MeasurementUnit' => MeasurementUnitAttachment::class,
         'Storelocation' => StorageLocationAttachment::class, 'Supplier' => SupplierAttachment::class,
         'User' => UserAttachment::class, 'LabelProfile' => LabelAttachment::class];
 
+    /*
+     * The discriminator map used for API platform. The key should be the same as the api platform short type (the @type JSONLD field).
+     */
+    private const API_DISCRIMINATOR_MAP = ["Part" => PartAttachment::class, "Project" => ProjectAttachment::class, "AttachmentType" => AttachmentTypeAttachment::class,
+        "Category" => CategoryAttachment::class, "Footprint" => FootprintAttachment::class, "Manufacturer" => ManufacturerAttachment::class,
+        "Currency" => CurrencyAttachment::class, "Group" => GroupAttachment::class, "MeasurementUnit" => MeasurementUnitAttachment::class,
+        "StorageLocation" => StorageLocationAttachment::class, "Supplier" => SupplierAttachment::class, "User" => UserAttachment::class, "LabelProfile" => LabelAttachment::class];
+
     /**
      * A list of file extensions, that browsers can show directly as image.
      * Based on: https://developer.mozilla.org/en-US/docs/Web/Media/Formats/Image_types