From 8e07f1dd6c7d7050aadd734045ba9627eb09ee71 Mon Sep 17 00:00:00 2001
From: Tushar-TG-14 <tushar.sharma@tigergraph.com>
Date: Sat, 21 Mar 2026 01:12:13 +0530
Subject: [PATCH] DOC-2653: Add REST-12004 error code description

---
 modules/reference/pages/return-codes.adoc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/modules/reference/pages/return-codes.adoc b/modules/reference/pages/return-codes.adoc
index afe0f64b6..79880d1de 100644
--- a/modules/reference/pages/return-codes.adoc
+++ b/modules/reference/pages/return-codes.adoc
@@ -138,6 +138,9 @@ Other RESTPP errors.
 | `REST-12003`
 | The query failed due to insufficient disk space.
 
+| `REST-12004`
+| The query failed because the engine encountered an invalid vertex ID. This usually occurs when the query references a vertex ID that does not exist. In rare cases, it may indicate an internal error. Check the RESTPP and GPE log files on the TigerGraph server using the request ID for more details.
+
 | `REST-30000`
 | The payload is invalid (general error).