Fabien Clément
--- a/modules/order/src/Plugin/DataType/AdjustmentProperty.php 0 → 100644
+++ b/modules/order/src/Plugin/DataType/AdjustmentProperty.php 0 → 100644
+  protected $definition;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setValue($value, $notify = TRUE): void {
+    $parent = $this->getParent();
+    if (!($parent instanceof AdjustmentItem) || $parent->isEmpty()) {
+      return;
+    }
+    $parent_values = $parent->getValue();
+    $parent_value = reset($parent_values);
+    if (!($parent_value instanceof Adjustment)) {
+      return;
+    }
+    $property_name = $this->definition->getAdjustmentProperty();
--- a/modules/order/src/Plugin/Field/FieldType/AdjustmentItem.php
+++ b/modules/order/src/Plugin/Field/FieldType/AdjustmentItem.php
+    $properties['type'] = AdjustmentPropertyDefinition::create('adjustment_property')
+      ->setAdjustmentProperty('type')
+      ->setLabel(t('Type'))
+      ->setComputed(TRUE);
+
+    $properties['label'] = AdjustmentPropertyDefinition::create('adjustment_property')
+      ->setLabel(t('Label'))
+      ->setComputed(TRUE);
+
+    $properties['amount'] = AdjustmentPropertyDefinition::create('adjustment_property')
+      ->setAdjustmentProperty('amount')
+      ->setLabel(t('Amount'))
+      ->setComputed(TRUE);
+
+    $properties['source_id'] = AdjustmentPropertyDefinition::create('adjustment_property')
+      ->setAdjustmentProperty('source_id')