汇款通知API请求体的remittanceAdviceNumber字段



汇款通知API请求体的remittanceAdviceNumber参数的来源是哪里?如果不填可以吗,填与不填有没有区别?

transact-pre.ti.com/.../test

{
  "remittanceAdviceNumber": "CustomerRemit100", ???
  "currencyCode": "USD",
  "lineItems": [
    {
      "paymentAmount": "2000",
      "financialDocumentNumber": "1234567890"
    },
    {
      "paymentAmount": "200",
      "financialDocumentNumber": "234567890"
    }
  ]
}