POST api/IndiaGSTInvoice/GenerateIRN

{
  "IG_ID": 1,
  "IG_BIH_ID": 1,
  "IG_BIH_NUMBER": "sample string 1",
  "IG_ACK_NO": "sample string 2",
  "IG_ACK_DATE": "2025-12-06T05:22:16.8239122+00:00",
  "IG_IRN": "sample string 3",
  "IG_SIGNED_INVOICE": "sample string 4",
  "IG_SIGNED_QR_CODE": "sample string 5",
  "IG_STATUS": "sample string 6",
  "IG_INFO_CODE": "sample string 7",
  "IG_INFO_DESC": "sample string 8",
  "IG_CP_ID": 1,
  "IG_RESPONSE_STATUS": "sample string 9",
  "IG_NOTES": "sample string 10",
  "IG_PROGRAM_ID": "sample string 11",
  "IG_CREATED_BY": 1,
  "IG_MODE": "sample string 12",
  "IG_TYPE": "sample string 13",
  "IGR_JSON_DATA": "sample string 14"
}

<PostIndiaGst xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/ZealitAPI.Models">
  <IGR_JSON_DATA>sample string 14</IGR_JSON_DATA>
  <IG_ACK_DATE>2025-12-06T05:22:16.8239122+00:00</IG_ACK_DATE>
  <IG_ACK_NO>sample string 2</IG_ACK_NO>
  <IG_BIH_ID>1</IG_BIH_ID>
  <IG_BIH_NUMBER>sample string 1</IG_BIH_NUMBER>
  <IG_CP_ID>1</IG_CP_ID>
  <IG_CREATED_BY>1</IG_CREATED_BY>
  <IG_ID>1</IG_ID>
  <IG_INFO_CODE>sample string 7</IG_INFO_CODE>
  <IG_INFO_DESC>sample string 8</IG_INFO_DESC>
  <IG_IRN>sample string 3</IG_IRN>
  <IG_MODE>sample string 12</IG_MODE>
  <IG_NOTES>sample string 10</IG_NOTES>
  <IG_PROGRAM_ID>sample string 11</IG_PROGRAM_ID>
  <IG_RESPONSE_STATUS>sample string 9</IG_RESPONSE_STATUS>
  <IG_SIGNED_INVOICE>sample string 4</IG_SIGNED_INVOICE>
  <IG_SIGNED_QR_CODE>sample string 5</IG_SIGNED_QR_CODE>
  <IG_STATUS>sample string 6</IG_STATUS>
  <IG_TYPE>sample string 13</IG_TYPE>
</PostIndiaGst>

Sample not available.