Could not create customer identifier for test environment

[abishkar]

Using api https://api.razorpay.com/v1/virtual_accounts tried to create customer identifier from postman in test mode but ended by with following error
{"error":{"code":"BAD_REQUEST_ERROR","description":"The requested URL was not found on the server.","source":"NA","step":"NA","reason":"NA","metadata":{}}}

This is my json request
{
"receivers": {
"types": [
"bank_account"
]
},
"allowed_payers": [
{
"type": "bank_account",
"bank_account": {
"ifsc": "UTIB0000013",
"account_number": "914010012345679"
}
},
{
"type": "bank_account",
"bank_account": {
"ifsc": "UTIB0000014",
"account_number": "914010012345680"
}
}
],
"description": "Virtual Account created for Raftar Soft",
"customer_id": "cust_CaVDm8eDRSXYME",//Replace customer_id
"close_by": 1981615838,
"notes": {
"project_name": "Banking Software"
}
}

Would you please let me know what will be solution to this problem.