From 7b51d7e6655bc5cf1be8d8966b9efac921c4fe63 Mon Sep 17 00:00:00 2001
From: Joel Challis <git@zvecr.com>
Date: Fri, 29 May 2026 07:56:36 +0100
Subject: [PATCH] Add API version assertion for split_data_sync module (#26237)

---
 keyboards/handwired/splittest/keymaps/data_sync/keymap.c  | 8 ++++++++
 .../handwired/splittest/keymaps/data_sync/keymap.json     | 5 +++++
 modules/qmk/split_data_sync/split_data_sync.c             | 3 +++
 3 files changed, 16 insertions(+)
 create mode 100644 keyboards/handwired/splittest/keymaps/data_sync/keymap.c
 create mode 100644 keyboards/handwired/splittest/keymaps/data_sync/keymap.json

diff --git a/keyboards/handwired/splittest/keymaps/data_sync/keymap.c b/keyboards/handwired/splittest/keymaps/data_sync/keymap.c
new file mode 100644
index 0000000000..fcef718983
--- /dev/null
+++ b/keyboards/handwired/splittest/keymaps/data_sync/keymap.c
@@ -0,0 +1,8 @@
+// Copyright 2022 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  [0] = LAYOUT(KC_L, KC_R)
+};
diff --git a/keyboards/handwired/splittest/keymaps/data_sync/keymap.json b/keyboards/handwired/splittest/keymaps/data_sync/keymap.json
new file mode 100644
index 0000000000..832fd82e53
--- /dev/null
+++ b/keyboards/handwired/splittest/keymaps/data_sync/keymap.json
@@ -0,0 +1,5 @@
+{
+    "modules": [
+        "qmk/split_data_sync"
+    ]
+}
diff --git a/modules/qmk/split_data_sync/split_data_sync.c b/modules/qmk/split_data_sync/split_data_sync.c
index cf0a93c350..4b70f7808a 100644
--- a/modules/qmk/split_data_sync/split_data_sync.c
+++ b/modules/qmk/split_data_sync/split_data_sync.c
@@ -3,6 +3,9 @@
 #include "debug.h"
 #include "timer.h"
 #include "transactions.h"
+#include "community_modules.h"
+
+ASSERT_COMMUNITY_MODULES_MIN_API_VERSION(1, 1, 2);
 
 typedef struct _master_to_slave_t {
     int m2s_data;