Printing the Cash Desk Payments Receipt

Hi Team,

I had a question on printing of cash desk payments(Payment using FPCJ transaction).

For example: If a user walks into a cash desk and pays his open due items. The payment document gets generated after giving the details in FPCJ transaction.

When I go to print the document using the option of Receipt.

A pop-up appears and asks for details like Application form Printer.

But the issue is when I click on print after providing the above details.

I am getting an error :

'The internal transaction 9100 0001 is not assigned to an external transaction'

Do we need to create any sub for this main 9100..

What are the steps which I need to follow to achieve this.

If any one has some links which would be helpful.

Thanks

Sajal Saha