I am trying to extract/ get data from zoho people and for this I succesffully create token and use this token

Then when I try this on postman

https://people.zoho.com/people/api/attendance/getUserReport?authtoken=833e17218b4b38e6eaabd517cf39110b&sdate=01-Jan-2019 &edate=31-Oct-2019&empId=51

then this is working but here I want all employees data not only 1 ie. 51.. so when I remove empid from above link then this shows me an error ..

{

    "msg": "Enter valid Id"

}

So is there any possibility to get all employees data at once .. please let me know