Address number is empty in PO

Hi all, I've not found any content in here which is about the same issue! When entering the storage location on item level of a purchase order, the name, street and city will be found automatically. However, the address number (EKPO-ADRN2) will not be found. This is a problem because the PO form will get printed address out of the number. I’m quite sure it used to work. What has changed? Thank you so much!