Alternative Payee Field is inactive during FB60 Transaction

[prachijirafe]

I have updated the permitted payee field in the vendor master record. 

But still while doing FB60 transaction, Alternative Payee field is not active.

I am using S4HANA private cloud system.

Is there any configuration which is suppressing the field.

As per my knowledge, if we enter the ALternative Payee or Permitted Payee, we should be able to select the alternative payee in FB60 transaction.