Hi @ronhu,

The mentioned invoice seems to be already entered in any of the following payment windows.

Supplier Payment, Supplier offset or Netting under the provided preliminary payment id.

when the invoice is recorded in any of the above mentioned windows, a preliminary payment id will be created. In payment windows such as Customer Payment, Supplier Payment, Supplier Offset, Customer Offset, etc, the Preliminary Payment ID is available in the client. You can search for the preliminary payment id and find the invoice from the system.

This is the reason why the system does not allow to enter the same invoice again as a payment because there is a preliminary payment id created in the system for the same invoice.

If the user requires to proceed with this new payment, then the already entered payment record needs to be removed from the system.

Hope this clarifies your question. Please let me know if there is any concern. 

Regards,

Lihini.

@EntLihinP Thank you for your input. I will check it tomorrow.