Receiving malformed JSON as response when using sysparm_cancelable at timesDescriptionReceiving malformed JSON as response when using sysparm_cancelable at times.Steps to Reproduce For one of the use cases, we are passing sysparm_cancelable query string parameter as true from UI. The expectation is - the previous transaction has to be canceled out if a similar request comes again.This is happening correctly. But at times we are getting an incorrect JSON response from the server (which has - the request being canceled out information along with some other partial response). See attachment. In this particular case, the JSON is malformed because of which we are seeing console errors on the client-side. (Client-side JSON parse is throwing an error because of malformed JSON)WorkaroundAfter carefully considering the severity and frequency of the issue, and the risk of attempting a fix, it has been decided to not address this issue in any current or future releases. We do not make this decision lightly, and we apologize for any inconvenience. When using sysparam_cancelable parameter in request it should be expected that the payload may be incomplete/invalid when status code indicates a server error (500>). In this case, the payload should not be parsed. If you have any questions regarding this problem, contact ServiceNow Customer Support. Related Problem: PRB1343028