As asked (and answered) here[0], it used to be a Scala case class limitation. There are tricks to do it anyway, like manually mapping fields by writing your own

As asked (and answered) here[0], it used to be a Scala case class limitation. There are tricks to do it anyway, like manually mapping fields by writing your own JsReads or JsWrites for your object. [0] http://stackoverflow.com/questions/20258417/how-to-get-around-the-scala-case-class-limit-of-22-fields http://stackoverflow.com/questions/20258417/how-to-get-aroun...