{"code":1002,"message":"Statement of Accounts does not exist."}

{"code":1002,"message":"Statement of Accounts does not exist."}

Hello Zoho team,

I faced an issue while trying to POST a sales order from sap to zoho books, using the below data packet:
{
  "customer_id": "4322967000027451968",
  "line_items": [
    {
      "item_id": "2154170000010847685",
      "rate": "752.00",
      "name": "000779",
      "description": "BORA BORA BEIGE QUARTZ SLAB 2CM 122X60=50.83",
      "quantity": "3.000000",
      "discount": ".00%",
      "tax_name": "TAXON"
    }
  ],
  "adjustment_description": "Shipping Charge"
}

It says:
Statement of Accounts does not exist

Please let me know how I can get rid of the error.