FB05 - Field BSEG-HBKID and HKTID (house bank/id) not populated

Hello,

I have detected that documents created through FB05 don't have the house bank and id fields (in additional data) populated.

When posting a payment with FB05, house bank field cannot be written.

If we edit the document, house bank can be edited but not so the id (remains grey-uneditable).

Does anybody know why is that, and what can I do to make it editable to inform both fields?

Thank you