Optional File Attachment - Unsuccessful HTTP response

When I add a file attachment form field in my process start form:

<div class="form-group">
	<label for="quote">Quote:</label>
	<input class="form-control" type="file" id="quote" cam-variable-name="quote" cam-variable-type="File" />

…and the user does not attach a file, I get the error: The process could not be started. : Unsuccessful HTTP response

I would like the file to be optional. How can I avoid this error message?


Hi Brent,

Outdated Information

this is a known issue which hasn’t been fixed yet.

This bug has been fixed and shipped with Camunda BPM 7.10.0.


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