Which field to use for dedupe field on intermediary object?

Eva_Yu
Level 3

Which field to use for dedupe field on intermediary object?

I created a custom object "document" to host all the assets we have for download. And created a intermediary object "download" to connect document and lead. I linked download to lead with lead ID, and linked download to document with "document ID".

I have several fields on the download object, but none of them are unique identifier. What other fields can I create to use for dedupe?

  • download datetime
  • Download Source
  • Created at
  • Updated at
  • Lead ID
  • Document ID