@Kartik-Upadhyay Thank You so much Kartik for faster reply. I kept USER , WEB as it is and LOCAL ip/mac id through ipconfig/all and took public ip through google by search "my ip" but still getting below error in Postman software :

Status : 200ok
{
"success": false,
"message": "Invalid Token",
"errorCode": "AG8001",
"data": ""
}

For your kind information , I did not enter anywhere my client id and password.

I have used below info in postman software :
https://apiconnect.angelbroking.com/rest/secure/angelbroking/order/v1/getLtpData

Type : POST
and body below :

{
"data": {
"exchange":"NSE",
"tradingsymbol":"SBIN-EQ",
"symboltoken":"3045"
}
}

Please check it if possible.

@Kartik-Upadhyay @admin I m not getting about below four parameters USER,WEB,LOCAL IP and API_KEY , also please let me know that would I have to input , 8 digit Api key or Secret Key which I have created through Angel smart Api while sending request through Postman Software ?

@admin Can i use Angel Java Api on Google kotlin platform without any problem ?

@admin I want to know that why migration is required while it should be work automatically if any new developer start uses api ?