TypeError: a is undefined › Forums › Cascading dropdowns › TypeError: a is undefined This topic contains 1 reply, has 2 voices, and was last updated by Alexander Bautz 1 month ago. Author Posts April 17, 2018 at 17:19 #20576 DCHParticipant I am using the latest DFFS (April 15, 2018) in SharePoint 2013 on prem to create a new cascading dropdown field. I don’t have any custom JS, and just a simple two column cascade. When I set the parent column to a known value in the lookup list, there is no response and this error in the console: TypeError: a is undefined .each spjs.casc.fill/< .each spjs.casc.fill spjs.casc.change/< I’ve never had an issue with this setup before, so it makes me think its related to the new update. Any thoughts? This topic was modified 1 month ago by DCH. April 17, 2018 at 19:44 #20604 Alexander BautzKeymaster Sorry about that – could you please send me a screenshot of the error message in the console? If you could use the Chrome browser and click the link on the error to highlight the section in the code where the error originates from I’ll get it fixed. Alexander Author Posts You must be logged in to reply to this topic.