diff --git a/dinapy/schemas/project_schema.py b/dinapy/schemas/project_schema.py
index 9759e8e..b5452a7 100644
--- a/dinapy/schemas/project_schema.py
+++ b/dinapy/schemas/project_schema.py
@@ -9,7 +9,7 @@
 
 class Attachment(BaseSchema):
     class Meta:
-        type_ = 'attachment'
+        type_ = 'metadata'
 
 class ProjectSchema(Schema):
     id = fields.Str(load_only=True)
@@ -23,7 +23,7 @@ class ProjectSchema(Schema):
     multilingualDescription = SkipUndefinedField(fields.Dict,allow_none=True,attribute="attributes.multilingualDescription")
     extensionValues = SkipUndefinedField(fields.Dict,allow_none=True,attribute="attributes.extensionValues")
 
-    attachment = create_relationship("project","attachment")
+    attachment = create_relationship("project","metadata","attachment")
 
     meta = fields.DocumentMeta()
 
diff --git a/dinapy/schemas/storageunitusageschema.py b/dinapy/schemas/storageunitusageschema.py
index c527ea6..72b7781 100644
--- a/dinapy/schemas/storageunitusageschema.py
+++ b/dinapy/schemas/storageunitusageschema.py
@@ -25,8 +25,8 @@ class StorageUnitUsage(Schema):
 	createdOn = SkipUndefinedField(fields.DateTime, load_only=True,attribute="attributes.createdOn")
 	createdBy = SkipUndefinedField(fields.Str, load_only=True,attribute="attributes.createdBy")
 
-	storageUnit = create_relationship("storage-unit-usage","storageUnit")
-	storageUnitType = create_relationship("storage-unit-usage","storageUnitType")
+	storageUnit = create_relationship("storage-unit-usage","storage-unit","storageUnit")
+	storageUnitType = create_relationship("storage-unit-usage","storage-unit-type","storageUnitType")
 	
 	@post_load
 	def set_none_to_undefined(self, data, **kwargs):