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Support Article

Multipart form data for REST Connect invalid Content Type



Unable to set content type for JSON in a multipart form-data for REST Connect.

Error Messages

{"error":{"message":"Invalid content-type: multipart/form-data; boundary=VSF4wPzjjM-yWfimCm8EBC7vZEi7zw3PUP application/json is expected","type":"XX.XXX.XXX.InvalidInputException"}}

Steps to Reproduce

  1. Create a REST Connect rule.
  2. Use pyRequestAttachmentPage page to add a binary file to the request.
  3. Add a JSON request mapping from a Clipboard page in the same rule.
  4. Use REST Connect method to invoke the Rest Connection. On the TCP dump, the generated request has the Content-Type as 'text or plain' instead of 'application or JSON'.

Root Cause

A defect or configuration issue in the operating environment.


Set the type of the image as "image/"+.pyFileType in the pyRequestAttachmentPage.

Using pyFileType, only sends the extension.

For example, png

Set as: type=Image/.png
Suggest Edit

Published September 6, 2018 - Updated October 8, 2020

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