diff --git a/server/AyaNova/Controllers/AttachmentController.cs b/server/AyaNova/Controllers/AttachmentController.cs
index 60eb8608..62932833 100644
--- a/server/AyaNova/Controllers/AttachmentController.cs
+++ b/server/AyaNova/Controllers/AttachmentController.cs
@@ -214,7 +214,7 @@ namespace AyaNova.Api.Controllers
                 !uploadFormData.FormFieldData.ContainsKey("AttachToObjectId"))
                 {
                     badRequest = true;
-                    errorMessage = "AttachToObjectType and / or AttachToObjectId are missing and are required";
+                    errorMessage = "Missing one or more required FormFieldData values: AttachToObjectType, AttachToObjectId, FileData";
                 }
                 if (!badRequest)
                 {