Guard /datasets/{dataset_id}/chunks cannot parse ingestion pipeline, use /documents/ingest instead (#16395)

docs/references/http_api_reference.md

@@ -1952,7 +1952,11 @@ Failure:
 
 **POST** `/api/v1/datasets/{dataset_id}/chunks`
 
-Parses documents in a specified dataset.
+Parses documents in a specified dataset using the built-in chunking pipeline.
+
+:::note
+This endpoint only supports datasets that use the built-in chunking pipeline. For datasets configured with an ingestion pipeline, use `POST /api/v1/documents/ingest` instead.
+:::
 
 #### Request
 
@@ -2005,6 +2009,70 @@ Failure:
 
 ---
 
+### Ingest documents
+
+**POST** `/api/v1/documents/ingest`
+
+Starts, cancels, or reruns ingestion for documents. Use this endpoint for documents in datasets configured with an ingestion pipeline.
+
+#### Request
+
+- Method: POST
+- URL: `/api/v1/documents/ingest`
+- Headers:
+  - `'Content-Type: application/json'`
+  - `'Authorization: Bearer <YOUR_API_KEY>'`
+- Body:
+  - `"doc_ids"`: `list[string]`
+  - `"run"`: `string`
+  - `"delete"`: `boolean`
+
+##### Request example
+
+```bash
+curl --request POST \
+     --url http://{address}/api/v1/documents/ingest \
+     --header 'Content-Type: application/json' \
+     --header 'Authorization: Bearer <YOUR_API_KEY>' \
+     --data '
+     {
+          "doc_ids": ["97a5f1c2759811efaa500242ac120004"],
+          "run": "1",
+          "delete": true
+     }'
+```
+
+##### Request parameters
+
+- `"doc_ids"`: (*Body parameter*), `list[string]`, *Required*
+  The IDs of the documents to ingest.
+- `"run"`: (*Body parameter*), `string`, *Required*
+  The ingestion action. Use `"1"` to start ingestion and `"2"` to cancel ingestion.
+- `"delete"`: (*Body parameter*), `boolean`
+  Whether to delete existing tasks and chunks before rerunning. Defaults to `false`.
+
+#### Response
+
+Success:
+
+```json
+{
+    "code": 0,
+    "data": true
+}
+```
+
+Failure:
+
+```json
+{
+    "code": 102,
+    "message": "Document not found!"
+}
+```
+
+---
+
 ### Stop parsing documents
 
 **DELETE** `/api/v1/datasets/{dataset_id}/chunks`