Getting warning message while saving transfer worksheet

Hi Team,

I have created one transfer worksheet in business unit XX101 for customer id 1234567 and built it.

In worksheet application page, I have given transfer to business unit, customer id and selected item for transfer.

While saving the worksheet I am getting below error.

"The Transaction Date, 2020-11-19, is not open. The open period for XX101 is from 2021-04-01 to 2021-04-30. (9000,301)

Open Period can be maintained in Open Period Update page."

I have clicked on OK button post that able to save worksheet but with Item accounting date and not with system date.

Please note I have changed Item transfer date to System at Receivables Options setup page for business unit XX101.