@if (!stepperValidModel.errors) { This is a hint. This message will disappear once you get an error from parsing or when the input is missing altogether. } @if (stepperValidModel.errors && stepperValidModel.errors.nxNumberStepperStepError) { That's not a valid step } @if (stepperValidModel.errors && stepperValidModel.errors.nxNumberStepperFormatError) { That's not a valid number }