public IActionResult VerifyCarrier(long ixCarrier, string sCarrier) { string validationResponse = ""; if (!_carriersService.VerifyCarrierUnique(ixCarrier, sCarrier)) { validationResponse = $"Carrier {sCarrier} already exists."; } if (validationResponse != "") { return(Json(validationResponse)); } else { return(Json(true)); } }