Description of problem: Missing a HandleResponseErrors field in DataInputSet of REST Service Task. It should be there because this option was implemented as a result of BZ1098137. Name of the field: HandleResponseErrors Type of the field: String Actual values are strings but it is then parsed to Boolean so only true/false values are considered. As it was said, reason for adding this field is BZ1098137.
As a workaround, isn't it possible to simply add this parameter to the inputSet yourself in case you need it? This is kinda an optional parameter, and rather low-level, so we were trying to hide it for default users. But we don't have a mechanism (yet) to define required vs. optional parameters (so the required are shown by default but it's easy do select additional, optional parameters later).
The workaround you mentioned is working. However, I just wanted to be sure it will be there (in the future as you wrote), so user will know there is an option to turn Exception Handling on/off. Right now, user has to know it from somewhere else.
I am closing it as not a bug and instead will create a documentation JIRA.