汇款通知请求报文的remittanceAdviceNumber每次输入都要唯一吗？

{
  "tiRemittanceAdviceNumber" : "06cshui**an**1",
  "remittanceAdviceNumber" : "csh**an001",
  "currencyCode" : "USD",
  "messages" : [
    {
      "code" : "TI-TXT-012013",
      "type" : "INFO",
      "reason" : "Remittance Advice 06cshuikuan001 posted",
      "message" : "Remittance Advice 06cshuikuan001 posted"
    }
  ],
  "lineItems" : [
    {
      "paymentAmount" : "831.36",
      "financialDocumentNumber" : "5497396240"
    }
  ]
}