Error in deserializing body of reply message for operation ..."

Error Message

Making a Web service call to the wmrest endpoint for getting workflow manager information can cause errors when the data returned is too large.

For example, http://<servername>/wmrest/services/<serverobject>/wmserver/reports/6/data returns the error {"error":{"code":500,"message":"Error in deserializing body of reply message for operation ..." because the data returned is larger than the server allows to return on this website.

Note:
 The remaining part of the error message varies depending on the exact call the user is making. 

Cause

The 'maxstringcontentlength' property of the web.config for the wmrest website has a value that is smaller than the data the server is returning.

Solution or Workaround

1. Navigate to the wmrest folder under the wwwroot folder for IIS - C:\Inetpub\wwwroot.
2. Open the web.config file in a text editor of your choice.
3. Search for the string 'maxStringContentLength' and modify the value. A suggested value is 5000000.
4. Save your changes and restart IIS.