Flow gets the error {"odata.error":{"code":"-1, Microsoft.SharePoint.Client.InvalidClientQueryException","message":{"lang":"en-US","value":"Not well formatted JSON stream."}}}, I have recreated the flow, recreated the step but the error persists.
Do you have proper access if you use update methods ?
Have you tried to switch the modern designer/classic designer for recreating ?
Please provide more information: Header, body.
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