2 items with the same type but different loan status status - one available for loan, another for short term loan The 2 items could be requested with different times for the same person on his home branch (same patron category, same branch code): - the item available could be loaned for 2 weeks - the item in the deposit could be loaned for 2 days As the items have the same item type can not be differentiated in the issuing rules.
One idea is add another control column for the issuing rule: loan_status (or something like that). After that one issuing rule can be set/controlled by 4 codes: - branchcode - categorycode - itemtype - loan_status Possible value for that column: - Short term loan - Long term loan