Error Code 3004: message The Customer field can neither be blank nor be incorrect. Please enter a correct customer

Error Code 3004: message The Customer field can neither be blank nor be incorrect. Please enter a correct customer

Hello everyone, I am i am trying to use the zoho api to make payment via  ttps://books.zoho.com/api/v3/customerpayments?


I passed all the parameters needed but i was getting error 

code: 3004 
message 
"The Customer field can neither be blank nor be incorrect. Please enter a correct customer"

Thanks you