我通过CL_HTTP_CLIENT使用JSON的POST请求。面临以下情况：
当xstrlen（jsonx）<= 1024时，得到http_rc = 200（OK）。
当xstrlen（jsonx）> 1024时，我得到http_rc = 400（给出的数据不正确）。
配置文件参数icm/HTTP/max_request_size_KB = 102400。
尝试不通过SAP客户端发送相同的数据，结果为200（正常）。
而不是client->request->set_data我用client->request->set_сdata，结果是类似的，只要字符串大小超过1024字节，我得到一个400响应。
可能是什么错误，我在某种程度上填写的数据不正确？
请求数据是否有大小限制？
代码：

DATA: client TYPE REF TO if_http_client.

  cl_http_client=>create_by_destination( EXPORTING
     destination = 'z_test'
     IMPORTING
       client = client ).

  client->propertytype_logon_popup = if_http_client=>co_disabled.
  client->request->set_version( if_http_request=>co_protocol_version_1_1 ).
  client->request->set_method( if_http_request=>co_request_method_post ).
  client->request->set_header_field( name = 'Accept'        value = 'application/json' ).
  client->request->set_header_field( name = 'Content-Type'  value = 'application/json' ).
  client->request->set_header_field( name = 'Authorization' value = |Bearer TokenValue| ).

  DATA: json TYPE string.
  DATA: jsonx TYPE xstring.

  json = '{"data":['.
  json = json && '{"login":"login1","first_name":"first_name","last_name":"last_name","email":"[email protected]","status":"active","invited":true,"change_password":false,'.
  json = json && '"groups":[{"path":"path"}]},'.
  json = json && '{"login":"login2","first_name":"first_name","last_name":"last_name","email":"[email protected]","status":"active","invited":true,"change_password":false,'.
  json = json && '"groups":[{"path":"path"}]},'.
*  json = json && '{"login":"login3","first_name":"first_name","last_name":"last_name","email":"[email protected]","status":"active","invited":true,"change_password":false,'.
*  json = json && '"groups":[{"path":"path"}]},'.
  json = json && '{"login":"login4","first_name":"first_name","last_name":"last_name","email":"[email protected]","status":"active","invited":true,"change_password":false,'.
  json = json && '"groups":[{"path":"path"}]},'.
  json = json && '{"login":"login5","first_name":"first_name","last_name":"last_name","email":"[email protected]","status":"active","invited":true,"change_password":false,'.
  json = json && '"groups":[{"path":"path"}]},'.
  json = json && '{"login":"login7","first_name":"first_name","last_name":"last_name","email":"[email protected]","status":"active","invited":true,"change_password":false,'.
  json = json && '"groups":[{"path":"path"}]}],'.
  json = json && '"partial_sync":false,"chief_sync":false,"notify_users":false,"with_whitelist":false}'.
  
  jsonx = cl_abap_codepage=>convert_to(
           source = json
           codepage = 'UTF-8' ).

  DATA(json_lenx) = xstrlen( jsonx ).
  client->request->set_data( data = jsonx
                             offset = 0
                             length = json_lenx ).

*  DATA(get_jsonx) = client->request->get_cdata( ).

  CALL METHOD client->send
    EXCEPTIONS
      http_communication_failure = 1
      http_invalid_state         = 2
      http_processing_failed     = 3
      http_invalid_timeout       = 4
      OTHERS                     = 5.
  IF sy-subrc <> 0.
    RAISE connection_error.
  ENDIF.
  CALL METHOD client->receive
    EXCEPTIONS
      http_communication_failure = 1
      http_invalid_state         = 2
      http_processing_failed     = 3
      OTHERS                     = 4.
  IF sy-subrc = 0.
    DATA: http_rc TYPE sy-subrc.
    client->response->get_status( IMPORTING code = http_rc ).
    l_xml = client->response->get_cdata( ).
  ENDIF.
  client->close( ).

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