Field of attachment is cleared, if some required field was not filled

Viktar Super Ep1

Field of attachment is cleared, if some required field was not filled:

1. there is a field for attachments
2. there are several mandatory fields

We create request. We fill the Attachment field. We don't fill surely a field. We click "to Send". The field attachment is cleared in the repeated form

Nic Brough -Adaptavist-

That's not really any form of question, and is a bit sparse on context.  I can try to guess:

Do you mean "Is there a way to delete the attachments if a field is empty?"

If you do, then the answer is "code" - you'll need to find/write a post-function or listener that can delete the attachments. 

Also, you may note I dropped the "required field".  If a field is required, it cannot be empty, so technically, you don't need the deletion because it never will be.