[Koha] Invoice Numbers in Koha 3.01.00.002

[Marc Nürnberger]

Dear All,

I am preparing to import our holdings into the recently set up Koha 
system. Since we used to have a special category for "invoice number" 
in each of our item records, I wonder if there is an equivalent in Koha.

I saw that you can enter an invoice number when receiving a shipment, 
but this number does not appear again in the "Receive items from" 
menu, where the item is added to the catalog, or after that in the 
Koha "edit items" menu.

Is the invoice number linked in some hidden subfield to the (952?) 
item record and could it be made visible and searchable?

Thanks a lot for your help.

Best regards,
Marc