@@ -, +, @@ --- api/v1/swagger/definitions/patron.json | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/api/v1/swagger/definitions/patron.json +++ a/api/v1/swagger/definitions/patron.json @@ -267,7 +267,7 @@ "description": "produce a warning for this patron if this item has previously been checked out to this patron if 'yes', not if 'no', defer to category setting if 'inherit'" }, "updated_on": { - "type": "string", + "type": ["string", "null"], "description": "time of last change could be useful for synchronization with external systems (among others)" }, "lastseen": { --