diff --git a/src/spaceone/identity/model/workspace/database.py b/src/spaceone/identity/model/workspace/database.py
index 73c13cbe..47cbe2be 100644
--- a/src/spaceone/identity/model/workspace/database.py
+++ b/src/spaceone/identity/model/workspace/database.py
@@ -13,7 +13,7 @@ class Workspace(MongoModel):
     )
     tags = DictField(default=None)
     created_by = StringField(max_length=255)
-    reference_id = StringField(max_length=255, default=None, null=True)
+    references = ListField(StringField(max_length=255), default=None, null=True)
     is_managed = BooleanField(default=False)
     trusted_account_id = StringField(max_length=40, default=None, null=True)
     domain_id = StringField(max_length=40)
@@ -28,6 +28,7 @@ class Workspace(MongoModel):
             "tags",
             "is_managed",
             "trusted_account_id",
+            "references",
             "deleted_at",
             "last_synced_at",
         ],
@@ -37,6 +38,9 @@ class Workspace(MongoModel):
             "state",
             "is_managed",
         ],
+        "change_query_keys": {
+            "reference_id": "references",
+        },
         "ordering": ["name"],
         "indexes": ["name", "domain_id"],
     }
diff --git a/src/spaceone/identity/model/workspace/response.py b/src/spaceone/identity/model/workspace/response.py
index 9a308fde..2245403d 100644
--- a/src/spaceone/identity/model/workspace/response.py
+++ b/src/spaceone/identity/model/workspace/response.py
@@ -15,7 +15,7 @@ class WorkspaceResponse(BaseModel):
     state: Union[State, None] = None
     tags: Union[dict, None] = None
     created_by: Union[str, None] = None
-    reference_id: Union[str, None] = None
+    references: Union[list, None] = None
     is_managed: Union[bool, None] = None
     trusted_account_id: Union[str, None] = None
     domain_id: Union[str, None] = None
diff --git a/src/spaceone/identity/service/job_service.py b/src/spaceone/identity/service/job_service.py
index cbcbb596..7fafe27a 100644
--- a/src/spaceone/identity/service/job_service.py
+++ b/src/spaceone/identity/service/job_service.py
@@ -502,12 +502,18 @@ def _create_workspace(
         params = {"trusted_account_id": trusted_account_id, "is_managed": True}
         if workspace_vos:
             workspace_vo = workspace_vos[0]
+
             if workspace_vo.name != name:
                 params.update({"name": name})
+            if workspace_vo.references not in reference_id:
+                params.update({"references": workspace_vo.references + [reference_id]})
+
             params.update({"last_synced_at": datetime.utcnow()})
             workspace_vo = self.workspace_mgr.update_workspace_by_vo(
                 params, workspace_vo
             )
+
+            self._remove_old_reference_id_from_workspace(domain_id, reference_id)
         else:
             params.update(
                 {
@@ -515,6 +521,7 @@ def _create_workspace(
                     "tags": self._set_workspace_theme(),
                     "domain_id": domain_id,
                     "last_synced_at": datetime.utcnow(),
+                    "references": [reference_id],
                 }
             )
             workspace_vo = self.workspace_mgr.create_workspace(params)
@@ -713,6 +720,19 @@ def _create_service_account(
             )
         return service_account_vo
 
+    def _remove_old_reference_id_from_workspace(
+        self, domain_id: str, reference_id: str
+    ) -> None:
+        workspace_vos = self.workspace_mgr.filter_workspaces(
+            domain_id=domain_id, references=[reference_id]
+        )
+        for workspace_vo in workspace_vos:
+            references = workspace_vo.references
+            references.remove(reference_id)
+            self.workspace_mgr.update_workspace_by_vo(
+                {"references": references}, workspace_vo
+            )
+
     @staticmethod
     def _get_location(result: dict, resource_group: str, sync_options: dict) -> list:
         location = result.get("location", [])