Hi I have a Nintex form in a SharePoint List. With respect to my requirements, this list should not contain any records/items with duplicate attachments. Is there some kind of a validation rule I could setup for my attachments control on the Nintex form to achieve this? If yes and if there is some kind of a special formula involved, can someone kindly give me some direction on how to write it?
Thanks and regards,
as far as I know there is no such validation. There is no builtin function to validate name, file size or content of an attachment to be uploaded so I don't see any options to validate if two attachments are the same.
I can imagine this could be doable just in case you allowed just one attachment per item.
then you could create a list field that would hold attachment name. the field would need to be configured to 'Enforce unique values'
in such a setup, once you tried to submit an item with duplicate attachment name, sharepoint would reject it.