I created my Header and request type by copying (REFERENCE) IT Change with QC integration for the header, and the (REFERENCE) Software Change as the request type. These two have references to Quality Center in them but I disabled the fields. I used these in anticipation that we will be integrating with QC in the next 6 months. However, we have not installed the QA accelorator yet. Could this be why I am recieving this error?
Try to disabled all the request rule. I don't think that your issue is due to the field that you added (also for QC). In case this issue is still pending, could you send me your request_type (extract): firstname.lastname@example.org