diff --git a/app/Kintone/KintoneAccess.php b/app/Kintone/KintoneAccess.php
index b07d721..07d010c 100644
--- a/app/Kintone/KintoneAccess.php
+++ b/app/Kintone/KintoneAccess.php
@@ -4,6 +4,7 @@ namespace App\Kintone;
 
 use App\Exceptions\AppCommonException;
 use App\Exceptions\ConfigException;
+use App\Exceptions\ExclusiveException;
 use App\Files\TmpFile;
 use App\Kintone\Models\KintoneModel;
 use Exception;
@@ -197,14 +198,6 @@ class KintoneAccess
             "revision" => $model->getRevision(),
         ];
 
-        // logger([
-        //     "ACTION" => "KINTONE UPDATE",
-        //     "APP" => $this->appName,
-        //     "RECORD_NO" => $model->getRecordId(),
-        //     "SEND_DATA" => $sendData,
-        //     "JSON" => json_encode($sendData, JSON_UNESCAPED_UNICODE),
-        // ]);
-
         $response = Http::withHeaders([
             "X-Cybozu-API-Token" => $this->apiToken,
         ])->put($this->getRecordUrl(), $sendData);
@@ -212,7 +205,30 @@ class KintoneAccess
         if ($response->failed()) {
             $e =  $response->toException();
             if ($e instanceof Exception) {
-                Log::error($e->getMessage());
+                $context = [
+                    "action" => "KINTONE_UPDATE",
+                    "appName" => $this->appName,
+                    "appId" => $this->appId,
+                    "recordId" => $model->getRecordId(),
+                    "sendRevision" => $model->getRevision(),
+                    "sendRecord" => $sendData["record"],
+                    "status" => $response->status(),
+                    "responseBody" => $response->body(),
+                ];
+
+                if ($response->status() === 409) {
+                    try {
+                        $current = $this->find((int)$model->getRecordId());
+                        $context["currentRevision"] = $current->getRevision();
+                    } catch (Exception $findException) {
+                        $context["currentRevisionError"] = $findException->getMessage();
+                    }
+
+                    Log::error(sprintf("Kintone排他エラー:%s", $e->getMessage()), $context);
+                    throw new ExclusiveException($e->getMessage(), (int)$e->getCode(), $e);
+                }
+
+                Log::error($e->getMessage(), $context);
                 throw $e;
             }
         }
@@ -239,9 +255,14 @@ class KintoneAccess
         if ($response->failed()) {
             $e =  $response->toException();
             if ($e instanceof Exception) {
-                Log::error($e->getMessage());
-                Log::error($response->body());
-                Log::error($sendData);
+                Log::error($e->getMessage(), [
+                    "action" => "KINTONE_CREATE",
+                    "appName" => $this->appName,
+                    "appId" => $this->appId,
+                    "sendRecord" => $sendData["record"],
+                    "status" => $response->status(),
+                    "responseBody" => $response->body(),
+                ]);
                 throw $e;
             }
         }