diff --git a/output/openapi/elasticsearch-openapi.json b/output/openapi/elasticsearch-openapi.json
index bd2107de13..0412e03bbf 100644
--- a/output/openapi/elasticsearch-openapi.json
+++ b/output/openapi/elasticsearch-openapi.json
@@ -23470,7 +23470,7 @@
           {
             "in": "path",
             "name": "id",
-            "description": "An identifier for the pipeline.",
+            "description": "An identifier for the pipeline.\nPipeline IDs must begin with a letter or underscore and contain only letters, underscores, dashes, hyphens and numbers.",
             "required": true,
             "deprecated": false,
             "schema": {
diff --git a/output/openapi/elasticsearch-serverless-openapi.json b/output/openapi/elasticsearch-serverless-openapi.json
index 389c2f722c..83ebe3c7c6 100644
--- a/output/openapi/elasticsearch-serverless-openapi.json
+++ b/output/openapi/elasticsearch-serverless-openapi.json
@@ -13399,7 +13399,7 @@
           {
             "in": "path",
             "name": "id",
-            "description": "An identifier for the pipeline.",
+            "description": "An identifier for the pipeline.\nPipeline IDs must begin with a letter or underscore and contain only letters, underscores, dashes, hyphens and numbers.",
             "required": true,
             "deprecated": false,
             "schema": {
diff --git a/output/schema/schema.json b/output/schema/schema.json
index 09cbc67793..0186b835b8 100644
--- a/output/schema/schema.json
+++ b/output/schema/schema.json
@@ -184216,7 +184216,7 @@
       },
       "path": [
         {
-          "description": "An identifier for the pipeline.",
+          "description": "An identifier for the pipeline.\nPipeline IDs must begin with a letter or underscore and contain only letters, underscores, dashes, hyphens and numbers.",
           "name": "id",
           "required": true,
           "type": {
@@ -184229,7 +184229,7 @@
         }
       ],
       "query": [],
-      "specLocation": "logstash/put_pipeline/LogstashPutPipelineRequest.ts#L24-L51"
+      "specLocation": "logstash/put_pipeline/LogstashPutPipelineRequest.ts#L24-L52"
     },
     {
       "kind": "response",
diff --git a/specification/logstash/put_pipeline/LogstashPutPipelineRequest.ts b/specification/logstash/put_pipeline/LogstashPutPipelineRequest.ts
index 1aecb324c1..53daa6c37f 100644
--- a/specification/logstash/put_pipeline/LogstashPutPipelineRequest.ts
+++ b/specification/logstash/put_pipeline/LogstashPutPipelineRequest.ts
@@ -43,6 +43,7 @@ export interface Request extends RequestBase {
   path_parts: {
     /**
      * An identifier for the pipeline.
+     * Pipeline IDs must begin with a letter or underscore and contain only letters, underscores, dashes, hyphens and numbers.
      */
     id: Id
   }