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Using Integromat to batch update multi-reference items - Error: 400 invalid request body


I’ve set up an automation using Integromat to update a multi-reference item field in a CMS collection based on a rollup of item IDs of each of the items I want to use as multi-references in Airtable. (Hard one to explain online - please ask me to clarify if this isn’t clear).

I’m using the PATCH method on a custom HTTP request.

The response returned is “The operation failed with an error. [400] ValidationError: Invalid request body” in Integromat, but it works perfectly on Postman, so I’m struggling to debug. I think I’m using the right syntax.

I included the name, slug, archived and draft fields after reading on here that they are required in the request body.

Integromat support didn’t seem to know what the issue was.

Here’s the body I’m trying to send (the rollups are for each of the multi-ref fields I want to update).

Can anyone help?

Thanks in advance!

@Will_Hepworth I am also experiencing the same issues. Let me know if you manage to resolve it!