REST API Call Returns Web Service Error 612

A document by KCS Integration on behalf of e7a0d1ecd0b6a45a9b2b95cce957c9fa48144e95 on Mar 12, 2018Last modified by Vishal Sharma on Jun 26, 2018
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Issue Description
You receive a Web Services Error 612 on a REST API call


Issue Resolution
The 612 error code denotes that there was an invalid Content Type in the REST API call. If you see this error, add a content type header specifying JSON format to your request. For example, try using "content type: application/json".


Since this error is in the formatting of the REST API call that is being made to the Marketo instance, we recommend working with a developer to update the API call to resolve the error message. Here is a Link to StackOverflow that helps to discuss this kind of error message further: (


Who This Solution Applies To
Customers using REST API

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