SAP供应商和客户的创建

进来遇到一个创建供应商的需求，由于在系统中关于供应商和客户的创建比较特殊，且没有相关函数进行创建，

找到一个类和方法来创建，类名：VMD_EI_API  方法名：MAINTAIN_DIRECT_INPUT，类似的

* 供应商表头
  ls_vendors-header-object_instance-lifnr = lv_vendor.  "供应商
  ls_vendors-header-object_task = 'M'.              "创建/更改
* 通用数据
  ls_vendors-central_data-central-data-stceg       = stceg.      "增值税登记号
  ls_vendors-central_data-central-data-ktokk       = '0001'.     "账户组
  ls_vendors-central_data-central-data-j_1kfrepre  = j_1kfrepre. "代表名称
  ls_vendors-central_data-central-datax-stceg      = 'X'.        "增值税登记号
  ls_vendors-central_data-central-datax-ktokk      = 'X'.        "账户组
  ls_vendors-central_data-central-datax-j_1kfrepre = 'X'.        "代表名称
* 电话
  ls_phone-contact-data-telephone = phone.
  APPEND ls_phone TO ls_vendors-central_data-address-communication-phone-phone.
  CLEAR ls_phone.
* 邮箱
  ls_smtp-contact-data-e_mail      = smtp.
  APPEND ls_smtp TO ls_vendors-central_data-address-communication-smtp-smtp.
  CLEAR ls_smtp.

  ls_vendors-central_data-address-postal-data-name         = name.       "名称
  ls_vendors-central_data-address-postal-data-name_2       = name.       "名称
  ls_vendors-central_data-address-postal-data-sort1        = sort1.      "属性（SAP为搜索项 1）
  ls_vendors-central_data-address-postal-data-street       = street.     "街道/门牌号
  ls_vendors-central_data-address-postal-data-postl_cod1   = postl_cod1. "邮政编码
  ls_vendors-central_data-address-postal-data-city         = city.       "城市
  ls_vendors-central_data-address-postal-data-country      = country.    "国家
  ls_vendors-central_data-address-postal-data-region       = region.     "地区
  ls_vendors-central_data-address-postal-data-langu        = '1'.        "语言
  ls_vendors-central_data-address-postal-datax-name        = 'X'.
  ls_vendors-central_data-address-postal-datax-name_2      = 'X'.
  ls_vendors-central_data-address-postal-datax-sort1       = 'X'.
  ls_vendors-central_data-address-postal-datax-street      = 'X'.
  ls_vendors-central_data-address-postal-datax-postl_cod1  = 'X'.
  ls_vendors-central_data-address-postal-datax-city        = 'X'.
  ls_vendors-central_data-address-postal-datax-country     = 'X'.
  ls_vendors-central_data-address-postal-datax