From f86fb917a8a6110f80c5921debbcee133419658f Mon Sep 17 00:00:00 2001
From: Liam Thompson <32779855+leemthompo@users.noreply.github.com>
Date: Tue, 27 May 2025 09:32:35 +0200
Subject: [PATCH] [DOCS] Document `join` field type not available on serverless
 currently

```
{
  "error": {
    "root_cause": [
      {
        "type": "status_exception",
        "reason": "Parameter validation failed for [/garage_to_product_db/_doc/product-123]: The http parameter [routing] (with value [vehicle-1]) is not permitted when running in serverless mode"
      }
    ],
    "type": "status_exception",
    "reason": "Parameter validation failed for [/garage_to_product_db/_doc/product-123]: The http parameter [routing] (with value [vehicle-1]) is not permitted when running in serverless mode"
  },
  "status": 400
}
```
---
 docs/reference/elasticsearch/mapping-reference/parent-join.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/docs/reference/elasticsearch/mapping-reference/parent-join.md b/docs/reference/elasticsearch/mapping-reference/parent-join.md
index 23d0e34441b91..08ee7ac490fdc 100644
--- a/docs/reference/elasticsearch/mapping-reference/parent-join.md
+++ b/docs/reference/elasticsearch/mapping-reference/parent-join.md
@@ -1,4 +1,6 @@
 ---
+applies_to:
+  serverless: unavailable
 navigation_title: "Join"
 mapped_pages:
   - https://www.elastic.co/guide/en/elasticsearch/reference/current/parent-join.html
@@ -6,7 +8,6 @@ mapped_pages:
 
 # Join field type [parent-join]
 
-
 The `join` data type is a special field that creates parent/child relation within documents of the same index. The `relations` section defines a set of possible relations within the documents, each relation being a parent name and a child name.
 
 ::::{warning}