When I try to insert a note using Workbench, I get the following error: "UNKNOWN ERROR: Too many object types to load: 146." with the following fields rendered:

  • Body
  • IsPrivate
  • OwnerID
  • ParentID

If I try to use upsert, I notice the following fields being rendered with no issue:

  • ID
  • Body
  • IsPrivate
  • OwnerID
  • Title

I believe something is wrong with Workbench being able to interpret the Note object correctly. Can anyone else confirm? Any suggestions on how to insert notes en masse into Salesforce?

  • Have you tried using Data Loader? Commented Oct 18, 2019 at 16:58
  • try diff versions of the API in Workbench (like older ones)
    – cropredy
    Commented Oct 18, 2019 at 21:23

1 Answer 1


I had a colleague figure out the solution. In Workbench, go to Settings -> Data Management Options -> Enable Smart Lookup (unchecked). By default for me, it was checked. Once disabled, I can view and perform inserts to the object without issue.

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