diff --git a/api/apps/sdk/chat.py b/api/apps/sdk/chat.py
index a07909424..9f19dda6f 100644
--- a/api/apps/sdk/chat.py
+++ b/api/apps/sdk/chat.py
@@ -14,7 +14,7 @@
 #  limitations under the License.
 #
 from flask import request
-
+from api.settings import RetCode
 from api.db import StatusEnum
 from api.db.services.dialog_service import DialogService
 from api.db.services.knowledgebase_service import KnowledgebaseService
@@ -40,6 +40,10 @@ def create(tenant_id):
         kb=kbs[0]
         if kb.chunk_num == 0:
             return get_error_data_result(f"The dataset {kb_id} doesn't own parsed file")
+    kbs = KnowledgebaseService.get_by_ids(ids)
+    embd_count = list(set(kb.embd_id for kb in kbs))
+    if embd_count != 1:
+        return get_result(retmsg='Datasets use different embedding models."',retcode=RetCode.AUTHENTICATION_ERROR)
     req["kb_ids"] = ids
     # llm
     llm = req.get("llm")
@@ -149,6 +153,8 @@ def update(tenant_id,chat_id):
         return get_error_data_result(retmsg='You do not own the chat')
     req =request.json
     ids = req.get("dataset_ids")
+    if "show_quotation" in req:
+        req["do_refer"]=req.pop("show_quotation")
     if "dataset_ids" in req:
         if not ids:
             return get_error_data_result("`datasets` can't be empty")
@@ -160,6 +166,12 @@ def update(tenant_id,chat_id):
                 kb = kbs[0]
                 if kb.chunk_num == 0:
                     return get_error_data_result(f"The dataset {kb_id} doesn't own parsed file")
+            kbs = KnowledgebaseService.get_by_ids(ids)
+            embd_count=list(set(kb.embd_id for kb in kbs))
+            if embd_count != 1 :
+                return get_result(
+                    retmsg='Datasets use different embedding models."',
+                    retcode=RetCode.AUTHENTICATION_ERROR)
             req["kb_ids"] = ids
     llm = req.get("llm")
     if llm:
@@ -225,10 +237,18 @@ def update(tenant_id,chat_id):
 @token_required
 def delete(tenant_id):
     req = request.json
-    ids = req.get("ids")
+    if not req:
+        ids=None
+    else:
+        ids=req.get("ids")
     if not ids:
-        return get_error_data_result(retmsg="`ids` are required")
-    for id in ids:
+        id_list = []
+        dias=DialogService.query(tenant_id=tenant_id,status=StatusEnum.VALID.value)
+        for dia in dias:
+            id_list.append(dia.id)
+    else:
+        id_list=ids
+    for id in id_list:
         if not DialogService.query(tenant_id=tenant_id, id=id, status=StatusEnum.VALID.value):
             return get_error_data_result(retmsg=f"You don't own the chat {id}")
         temp_dict = {"status": StatusEnum.INVALID.value}
@@ -260,7 +280,8 @@ def list_chat(tenant_id):
                    "quote": "show_quote",
                    "system": "prompt",
                    "rerank_id": "rerank_model",
-                   "vector_similarity_weight": "keywords_similarity_weight"}
+                   "vector_similarity_weight": "keywords_similarity_weight",
+                   "do_refer":"show_quotation"}
     key_list = ["similarity_threshold", "vector_similarity_weight", "top_n", "rerank_id"]
     for res in chats:
         for key, value in res["prompt_config"].items():
diff --git a/api/apps/sdk/dataset.py b/api/apps/sdk/dataset.py
index bdb67533f..acb3abb8e 100644
--- a/api/apps/sdk/dataset.py
+++ b/api/apps/sdk/dataset.py
@@ -21,7 +21,7 @@ from api.db.services.document_service import DocumentService
 from api.db.services.file2document_service import File2DocumentService
 from api.db.services.file_service import FileService
 from api.db.services.knowledgebase_service import KnowledgebaseService
-from api.db.services.llm_service import TenantLLMService
+from api.db.services.llm_service import TenantLLMService,LLMService
 from api.db.services.user_service import TenantService
 from api.settings import RetCode
 from api.utils import get_uuid
@@ -68,9 +68,12 @@ def create(tenant_id):
                                 "BAAI/bge-small-zh-v1.5","jinaai/jina-embeddings-v2-base-en","jinaai/jina-embeddings-v2-small-en",
                                 "nomic-ai/nomic-embed-text-v1.5","sentence-transformers/all-MiniLM-L6-v2","text-embedding-v2",
                                 "text-embedding-v3","maidalun1020/bce-embedding-base_v1"]
-        if not TenantLLMService.query(tenant_id=tenant_id,model_type="embedding", llm_name=req.get("embedding_model"))\
-                and req.get("embedding_model") not in valid_embedding_models:
+        embd_model=LLMService.query(llm_name=req["embedding_model"],model_type="embedding")
+        if not embd_model:
             return get_error_data_result(f"`embedding_model` {req.get('embedding_model')} doesn't exist")
+        if embd_model:
+            if req["embedding_model"] not in valid_embedding_models and not TenantLLMService.query(tenant_id=tenant_id,model_type="embedding", llm_name=req.get("embedding_model")):
+                return get_error_data_result(f"`embedding_model` {req.get('embedding_model')} doesn't exist")
     key_mapping = {
         "chunk_num": "chunk_count",
         "doc_num": "document_count",
@@ -92,25 +95,32 @@ def create(tenant_id):
 @token_required
 def delete(tenant_id):
     req = request.json
-    ids = req.get("ids")
+    if not req:
+        ids=None
+    else:
+        ids=req.get("ids")
     if not ids:
-        return get_error_data_result(
-            retmsg="ids are required")
-    for id in ids:
+        id_list = []
+        kbs=KnowledgebaseService.query(tenant_id=tenant_id)
+        for kb in kbs:
+            id_list.append(kb.id)
+    else:
+        id_list=ids
+    for id in id_list:
         kbs = KnowledgebaseService.query(id=id, tenant_id=tenant_id)
         if not kbs:
             return get_error_data_result(retmsg=f"You don't own the dataset {id}")
-    for doc in DocumentService.query(kb_id=id):
-        if not DocumentService.remove_document(doc, tenant_id):
+        for doc in DocumentService.query(kb_id=id):
+            if not DocumentService.remove_document(doc, tenant_id):
+                return get_error_data_result(
+                    retmsg="Remove document error.(Database error)")
+            f2d = File2DocumentService.get_by_document_id(doc.id)
+            FileService.filter_delete([File.source_type == FileSource.KNOWLEDGEBASE, File.id == f2d[0].file_id])
+            File2DocumentService.delete_by_document_id(doc.id)
+        if not KnowledgebaseService.delete_by_id(id):
             return get_error_data_result(
-                retmsg="Remove document error.(Database error)")
-        f2d = File2DocumentService.get_by_document_id(doc.id)
-        FileService.filter_delete([File.source_type == FileSource.KNOWLEDGEBASE, File.id == f2d[0].file_id])
-        File2DocumentService.delete_by_document_id(doc.id)
-    if not KnowledgebaseService.delete_by_id(id):
-        return get_error_data_result(
-            retmsg="Delete dataset error.(Database error)")
-    return get_result(retcode=RetCode.SUCCESS)
+                retmsg="Delete dataset error.(Database error)")
+        return get_result(retcode=RetCode.SUCCESS)
 
 @manager.route('/datasets/<dataset_id>', methods=['PUT'])
 @token_required
@@ -139,8 +149,9 @@ def update(tenant_id,dataset_id):
                 retmsg="Can't change `tenant_id`.")
     e, kb = KnowledgebaseService.get_by_id(dataset_id)
     if "parser_config" in req:
-        print(kb.parser_config,flush=True)
-        req["parser_config"]=kb.parser_config.update(req["parser_config"])
+        temp_dict=kb.parser_config
+        temp_dict.update(req["parser_config"])
+        req["parser_config"] = temp_dict
     if "chunk_count" in req:
         if req["chunk_count"] != kb.chunk_num:
             return get_error_data_result(
@@ -157,7 +168,8 @@ def update(tenant_id,dataset_id):
                 retmsg="If `chunk_count` is not 0, `chunk_method` is not changeable.")
         req['parser_id'] = req.pop('chunk_method')
         if req['parser_id'] != kb.parser_id:
-            req["parser_config"] = get_parser_config(chunk_method, parser_config)
+            if not req.get("parser_config"):
+                req["parser_config"] = get_parser_config(chunk_method, parser_config)
     if "embedding_model" in req:
         if kb.chunk_num != 0 and req['embedding_model'] != kb.embd_id:
             return get_error_data_result(
@@ -168,9 +180,12 @@ def update(tenant_id,dataset_id):
                                 "BAAI/bge-small-zh-v1.5","jinaai/jina-embeddings-v2-base-en","jinaai/jina-embeddings-v2-small-en",
                                 "nomic-ai/nomic-embed-text-v1.5","sentence-transformers/all-MiniLM-L6-v2","text-embedding-v2",
                                 "text-embedding-v3","maidalun1020/bce-embedding-base_v1"]
-        if not TenantLLMService.query(tenant_id=tenant_id,model_type="embedding", llm_name=req.get("embedding_model"))\
-                and req.get("embedding_model") not in valid_embedding_models:
+        embd_model=LLMService.query(llm_name=req["embedding_model"],model_type="embedding")
+        if not embd_model:
             return get_error_data_result(f"`embedding_model` {req.get('embedding_model')} doesn't exist")
+        if embd_model:
+            if req["embedding_model"] not in valid_embedding_models and not TenantLLMService.query(tenant_id=tenant_id,model_type="embedding", llm_name=req.get("embedding_model")):
+                return get_error_data_result(f"`embedding_model` {req.get('embedding_model')} doesn't exist")
         req['embd_id'] = req.pop('embedding_model')
     if "name" in req:
         req["name"] = req["name"].strip()
diff --git a/api/apps/sdk/doc.py b/api/apps/sdk/doc.py
index 626444e7b..fd6d290a5 100644
--- a/api/apps/sdk/doc.py
+++ b/api/apps/sdk/doc.py
@@ -46,6 +46,9 @@ from rag.utils.es_conn import ELASTICSEARCH
 from rag.utils.storage_factory import STORAGE_IMPL
 import os
 
+MAXIMUM_OF_UPLOADING_FILES = 256
+
+
 
 @manager.route('/datasets/<dataset_id>/documents', methods=['POST'])
 @token_required
@@ -58,11 +61,21 @@ def upload(dataset_id, tenant_id):
         if file_obj.filename == '':
             return get_result(
                 retmsg='No file selected!', retcode=RetCode.ARGUMENT_ERROR)
-
+    # total size
+    total_size = 0
+    for file_obj in file_objs:
+        file_obj.seek(0, os.SEEK_END)
+        total_size += file_obj.tell()
+        file_obj.seek(0)
+    MAX_TOTAL_FILE_SIZE=10*1024*1024
+    if total_size > MAX_TOTAL_FILE_SIZE:
+        return get_result(
+            retmsg=f'Total file size exceeds 10MB limit! ({total_size / (1024 * 1024):.2f} MB)',
+            retcode=RetCode.ARGUMENT_ERROR)
     e, kb = KnowledgebaseService.get_by_id(dataset_id)
     if not e:
         raise LookupError(f"Can't find the dataset with ID {dataset_id}!")
-    err, files = FileService.upload_document(kb, file_objs, tenant_id)
+    err, files= FileService.upload_document(kb, file_objs, tenant_id)
     if err:
         return get_result(
             retmsg="\n".join(err), retcode=RetCode.SERVER_ERROR)
@@ -140,6 +153,7 @@ def update_doc(tenant_id, dataset_id, document_id):
         if not e:
             return get_error_data_result(retmsg="Document not found!")
         req["parser_config"] = get_parser_config(req["chunk_method"], req.get("parser_config"))
+        DocumentService.update_parser_config(doc.id, req["parser_config"])
         if doc.token_num > 0:
             e = DocumentService.increment_chunk_num(doc.id, doc.kb_id, doc.token_num * -1, doc.chunk_num * -1,
                                                     doc.process_duation * -1)
@@ -210,10 +224,10 @@ def list_docs(dataset_id, tenant_id):
         }
         renamed_doc = {}
         for key, value in doc.items():
-            if key =="run":
-                renamed_doc["run"]=run_mapping.get(str(value))
             new_key = key_mapping.get(key, key)
             renamed_doc[new_key] = value
+            if key =="run":
+                renamed_doc["run"]=run_mapping.get(value)
         renamed_doc_list.append(renamed_doc)
     return get_result(data={"total": tol, "docs": renamed_doc_list})
 
@@ -280,14 +294,11 @@ def parse(tenant_id,dataset_id):
         doc = DocumentService.query(id=id,kb_id=dataset_id)
         if not doc:
             return get_error_data_result(retmsg=f"You don't own the document {id}.")
-        if doc[0].progress != 0.0:
-            return get_error_data_result("Can't stop parsing document with progress at 0 or 100")
         info = {"run": "1", "progress": 0}
         info["progress_msg"] = ""
         info["chunk_num"] = 0
         info["token_num"] = 0
         DocumentService.update_by_id(id, info)
-        # if str(req["run"]) == TaskStatus.CANCEL.value:
         ELASTICSEARCH.deleteByQuery(
             Q("match", doc_id=id), idxnm=search.index_name(tenant_id))
         TaskService.filter_delete([Task.doc_id == id])
@@ -312,10 +323,8 @@ def stop_parsing(tenant_id,dataset_id):
             return get_error_data_result(retmsg=f"You don't own the document {id}.")
         if doc[0].progress == 100.0 or doc[0].progress == 0.0:
             return get_error_data_result("Can't stop parsing document with progress at 0 or 100")
-        info = {"run": "2", "progress": 0}
+        info = {"run": "2", "progress": 0,"chunk_num":0}
         DocumentService.update_by_id(id, info)
-        # if str(req["run"]) == TaskStatus.CANCEL.value:
-        tenant_id = DocumentService.get_tenant_id(id)
         ELASTICSEARCH.deleteByQuery(
             Q("match", doc_id=id), idxnm=search.index_name(tenant_id))
     return get_result()
@@ -355,10 +364,10 @@ def list_chunks(tenant_id,dataset_id,document_id):
     doc=doc.to_dict()
     renamed_doc = {}
     for key, value in doc.items():
-        if key == "run":
-            renamed_doc["run"] = run_mapping.get(str(value))
         new_key = key_mapping.get(key, key)
         renamed_doc[new_key] = value
+        if key == "run":
+            renamed_doc["run"] = run_mapping.get(str(value))
     res = {"total": sres.total, "chunks": [], "doc": renamed_doc}
     origin_chunks = []
     sign = 0
@@ -398,12 +407,17 @@ def list_chunks(tenant_id,dataset_id,document_id):
             "content_with_weight": "content",
             "doc_id": "document_id",
             "important_kwd": "important_keywords",
-            "img_id": "image_id"
+            "img_id": "image_id",
+            "available_int":"available"
         }
         renamed_chunk = {}
         for key, value in chunk.items():
             new_key = key_mapping.get(key, key)
             renamed_chunk[new_key] = value
+        if renamed_chunk["available"] == "0":
+            renamed_chunk["available"] = False
+        if renamed_chunk["available"] == "1":
+            renamed_chunk["available"] = True
         res["chunks"].append(renamed_chunk)
     return get_result(data=res)
 
@@ -441,7 +455,7 @@ def add_chunk(tenant_id,dataset_id,document_id):
     embd_id = DocumentService.get_embd_id(document_id)
     embd_mdl = TenantLLMService.model_instance(
         tenant_id, LLMType.EMBEDDING.value, embd_id)
-
+    print(embd_mdl,flush=True)
     v, c = embd_mdl.encode([doc.name, req["content"]])
     v = 0.1 * v[0] + 0.9 * v[1]
     d["q_%d_vec" % len(v)] = v.tolist()
@@ -459,7 +473,7 @@ def add_chunk(tenant_id,dataset_id,document_id):
         "kb_id": "dataset_id",
         "create_timestamp_flt": "create_timestamp",
         "create_time": "create_time",
-        "document_keyword": "document",
+        "document_keyword": "document"
     }
     renamed_chunk = {}
     for key, value in d.items():
@@ -480,12 +494,18 @@ def rm_chunk(tenant_id,dataset_id,document_id):
         return get_error_data_result(retmsg=f"You don't own the document {document_id}.")
     doc = doc[0]
     req = request.json
-    if not req.get("chunk_ids"):
-        return get_error_data_result("`chunk_ids` is required")
     query = {
         "doc_ids": [doc.id], "page": 1, "size": 1024, "question": "", "sort": True}
     sres = retrievaler.search(query, search.index_name(tenant_id), highlight=True)
-    for chunk_id in req.get("chunk_ids"):
+    if not req:
+        chunk_ids=None
+    else:
+        chunk_ids=req.get("chunk_ids")
+    if not chunk_ids:
+        chunk_list=sres.ids
+    else:
+        chunk_list=chunk_ids
+    for chunk_id in chunk_list:
         if chunk_id not in sres.ids:
             return get_error_data_result(f"Chunk {chunk_id} not found")
     if not ELASTICSEARCH.deleteByQuery(
diff --git a/api/apps/sdk/session.py b/api/apps/sdk/session.py
index c99e1aa83..c2f5b0e41 100644
--- a/api/apps/sdk/session.py
+++ b/api/apps/sdk/session.py
@@ -100,7 +100,7 @@ def completion(tenant_id,chat_id):
         return get_error_data_result(retmsg="Session does not exist")
     conv = conv[0]
     if not DialogService.query(id=chat_id, tenant_id=tenant_id, status=StatusEnum.VALID.value):
-        return get_error_data_result(retmsg="You do not own the session")
+        return get_error_data_result(retmsg="You do not own the chat")
     msg = []
     question = {
         "content": req.get("question"),
@@ -168,9 +168,6 @@ def list(chat_id,tenant_id):
         return get_error_data_result(retmsg=f"You don't own the assistant {chat_id}.")
     id = request.args.get("id")
     name = request.args.get("name")
-    session = ConversationService.query(id=id,name=name,dialog_id=chat_id)
-    if not session:
-        return get_error_data_result(retmsg="The session doesn't exist")
     page_number = int(request.args.get("page", 1))
     items_per_page = int(request.args.get("page_size", 1024))
     orderby = request.args.get("orderby", "create_time")
@@ -183,6 +180,10 @@ def list(chat_id,tenant_id):
         return get_result(data=[])
     for conv in convs:
         conv['messages'] = conv.pop("message")
+        infos = conv["messages"]
+        for info in infos:
+            if "prompt" in info:
+                info.pop("prompt")
         conv["chat"] = conv.pop("dialog_id")
         if conv["reference"]:
             messages = conv["messages"]
@@ -218,10 +219,20 @@ def list(chat_id,tenant_id):
 def delete(tenant_id,chat_id):
     if not DialogService.query(id=chat_id, tenant_id=tenant_id, status=StatusEnum.VALID.value):
         return get_error_data_result(retmsg="You don't own the chat")
-    ids = request.json.get("ids")
+    req = request.json
+    convs = ConversationService.query(dialog_id=chat_id)
+    if not req:
+        ids = None
+    else:
+        ids=req.get("ids")
+
     if not ids:
-        return get_error_data_result(retmsg="`ids` is required in deleting operation")
-    for id in ids:
+        conv_list = []
+        for conv in convs:
+            conv_list.append(conv.id)
+    else:
+        conv_list=ids
+    for id in conv_list:
         conv = ConversationService.query(id=id,dialog_id=chat_id)
         if not conv:
             return get_error_data_result(retmsg="The chat doesn't own the session")
diff --git a/api/utils/api_utils.py b/api/utils/api_utils.py
index 68db211e6..f2506e672 100644
--- a/api/utils/api_utils.py
+++ b/api/utils/api_utils.py
@@ -344,7 +344,7 @@ def get_parser_config(chunk_method,parser_config):
         return parser_config
     if not chunk_method:
         chunk_method = "naive"
-    key_mapping={"naive":{"chunk_token_num": 128, "delimiter": "\\n!?;。；！？", "html4excel": False,"layout_recognize": True, "raptor": {"user_raptor": False}},
+    key_mapping={"naive":{"chunk_token_num": 128, "delimiter": "\\n!?;。；！？", "html4excel": False,"layout_recognize": True, "raptor": {"use_raptor": False}},
                  "qa":{"raptor":{"use_raptor":False}},
                  "resume":None,
                  "manual":{"raptor":{"use_raptor":False}},
diff --git a/sdk/python/ragflow/modules/chat.py b/sdk/python/ragflow/modules/chat.py
index cf95a9f76..39957ee65 100644
--- a/sdk/python/ragflow/modules/chat.py
+++ b/sdk/python/ragflow/modules/chat.py
@@ -68,7 +68,7 @@ class Chat(Base):
             return result_list
         raise Exception(res["message"])
 
-    def delete_sessions(self,ids):
+    def delete_sessions(self,ids:List[str]=None):
         res = self.rm(f"/chats/{self.id}/sessions", {"ids": ids})
         res = res.json()
         if res.get("code") != 0:
diff --git a/sdk/python/ragflow/ragflow.py b/sdk/python/ragflow/ragflow.py
index 68da849b8..af1f00448 100644
--- a/sdk/python/ragflow/ragflow.py
+++ b/sdk/python/ragflow/ragflow.py
@@ -64,7 +64,7 @@ class RAGFlow:
             return DataSet(self, res["data"])
         raise Exception(res["message"])
 
-    def delete_datasets(self, ids: List[str]):
+    def delete_datasets(self, ids: List[str] = None):
         res = self.delete("/datasets",{"ids": ids})
         res=res.json()
         if res.get("code") != 0:
@@ -135,9 +135,9 @@ class RAGFlow:
             return Chat(self, res["data"])
         raise Exception(res["message"])
 
-    def delete_chats(self,ids: List[str] = None,names: List[str] = None ) -> bool:
+    def delete_chats(self,ids: List[str] = None) -> bool:
         res = self.delete('/chats',
-                      {"ids":ids, "names":names})
+                      {"ids":ids})
         res = res.json()
         if res.get("code") != 0:
             raise Exception(res["message"])