Unmatched quotes in the CSV are not being escaped correctly. From #234
Finally, the POSTed transaction data could not be JSON decoded successfully as there were two instances of an extra " character inside a field that threw json_decode(). This wasn't picked up when uploading the transaction CSV - the JSON encoded data that it was tripping on looked like this:
Unmatched quotes in the CSV are not being escaped correctly. From #234
POST DATA:
CSV: