diff --git a/modules/workflows/methods/methodSharepoint/helpers/apiClient.py b/modules/workflows/methods/methodSharepoint/helpers/apiClient.py
index 5b02aaab..309497a4 100644
--- a/modules/workflows/methods/methodSharepoint/helpers/apiClient.py
+++ b/modules/workflows/methods/methodSharepoint/helpers/apiClient.py
@@ -45,11 +45,24 @@ class ApiClientHelper:
             Dict with API response or error information
         """
         try:
-            if not hasattr(self.services, 'sharepoint') or not self.services.sharepoint._target.accessToken:
+            sp = getattr(self.services, 'sharepoint', None)
+            if not sp:
                 return {"error": "SharePoint service not configured with access token"}
-            
+            # Service center: accessToken on service directly. Legacy: wrapped in PublicService._target
+            try:
+                access_token = getattr(sp, 'accessToken', None)
+                if access_token is None:
+                    target = getattr(sp, '_target', None)  # Only legacy hub has _target
+                    if target is not None:
+                        access_token = getattr(target, 'accessToken', None)
+            except AttributeError as ae:
+                logger.warning(f"SharePoint token extraction failed: {ae}")
+                return {"error": "SharePoint service not configured with access token"}
+            if not access_token:
+                return {"error": "SharePoint service not configured with access token"}
+
             headers = {
-                "Authorization": f"Bearer {self.services.sharepoint._target.accessToken}",
+                "Authorization": f"Bearer {access_token}",
                 "Content-Type": "application/json" if data and method != "PUT" else "application/octet-stream" if data else "application/json"
             }