# Adding meeting registrant by api, seeing 500 Internal Server Error instead **URL:** \ **Category:** API and Webhooks\ **Created:** [August 4, 2021, 2:06pm UTC](https://devforum.zoom.us/t/adding-meeting-registrant-by-api-seeing-500-internal-server-error-instead/55229 "2021-08-04T14:06:14Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![davidlfliang](https://avatars.discourse-cdn.com/v4/letter/d/f08c70/32.png) [@davidlfliang](https://devforum.zoom.us/u/davidlfliang)\ **Post date:** [August 4, 2021, 2:06pm UTC](https://devforum.zoom.us/t/adding-meeting-registrant-by-api-seeing-500-internal-server-error-instead/55229/1 "2021-08-04T14:06:14Z")
**Description** Adding meeting registrant by api, seeing 500 Internal Server Error instead **Error** 500 Internal Server Error **Which App Type (OAuth / Chatbot / JWT / Webhook)?** JWT App **Which Endpoint/s?** [https://api.zoom.us/v2/meetings/:meetingId/registrants](https://api.zoom.us/v2/meetings/:meetingId/registrants) Send the test request through Postman, meetingId is the path variable Json body { “email”: “[example@example.com](mailto:example@example.com)”, “first\_name”: “Mike” } **Additional context** - Meeting Registration is enabled on Zoom Portal - List meeting registrants API is working without problem, but the Adding meeting registrant by APi causes 500 error ---
**Author:** ![MaxM](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/maxm/32/42303_2.png) [@MaxM](https://devforum.zoom.us/u/MaxM)\ **Post date:** [August 6, 2021, 12:59am UTC](https://devforum.zoom.us/t/adding-meeting-registrant-by-api-seeing-500-internal-server-error-instead/55229/2 "2021-08-06T00:59:19Z")
Hey @davidlfliang, Thank you for reaching out to the Zoom Developer Forum. Does this request work when using another REST client such as cURL? Thanks, Max ---
**Author:** ![davidlfliang](https://avatars.discourse-cdn.com/v4/letter/d/f08c70/32.png) [@davidlfliang](https://devforum.zoom.us/u/davidlfliang)\ **Post date:** [August 6, 2021, 1:52am UTC](https://devforum.zoom.us/t/adding-meeting-registrant-by-api-seeing-500-internal-server-error-instead/55229/3 "2021-08-06T01:52:35Z")
Thanks for the reply. I figured it out by myself. It’s caused by the duplicated content type in headers tab in Postman, I used the Zoom imported collection, then tried the default multipart/form-data, it was not working. Then, I switched to json format, even though I changed the Body to raw and json format in Postman GUI, the multipart/form-data was still somehow in the headers, thus causing the the duplicated content-type header. Once I removed the multipart/form-data, everything works just fine. ---
**Author:** ![will.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/will.zoom/32/14417_2.png) [@will.zoom](https://devforum.zoom.us/u/will.zoom)\ **Post date:** [August 6, 2021, 6:31pm UTC](https://devforum.zoom.us/t/adding-meeting-registrant-by-api-seeing-500-internal-server-error-instead/55229/4 "2021-08-06T18:31:21Z")
Glad you figured it out! 🙂 ---
**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/6/1/614bdd549b610bbaa46ff934617683a02bdaa03c.png) [@system](https://devforum.zoom.us/u/system)\ **Post date:** [September 6, 2021, 4:31am UTC](https://devforum.zoom.us/t/adding-meeting-registrant-by-api-seeing-500-internal-server-error-instead/55229/5 "2021-09-06T04:31:49Z")
Closed on September 6, 2021, 4:31am UTC This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.