Cancel Payment Batch FRM-4020:Field must be entered

Hi,

On 11.5.10.2 EBS

I cannot Cancel Payment Batch.

1.Payment Batch #NYF1506196

2.Actions > Cancel Payment Batch  Check and OK button click.

   FRM-40202: Field must be entered.

I cannot acquire Check Number to acquire APList from a screen.

3.Submit Delete button on Toolbar.
   It was shown “APP-SQLAP-10776: Only Payment Batches with status Unstated or New are allowed to be deleted.”
4.Submit Requery Batch
  It was shown below message on status bar : “FRM-4020:Field must be entered.”

5. Submit Requery Batch

It was shown below message on status bar : “FRM-4020:Field must be entered.”

And Cursor select Exchange rate

It thinks with a problem that I cannot input Exchange rate feild greyout.