https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=10596 --- Comment #2 from Katrin Fischer <katrin.fischer@bsz-bw.de> --- We recently noticed some issues with missing expiration dates - it affected the due date calculations. This might be due to the fact that Koha tries to set the due date before the patron expires, but if we were to make the expiration date optional, this is something that would need a closer look. -- You are receiving this mail because: You are watching all bug changes. You are the assignee for the bug.