public async Task <CreateStepOptionResponse> Post(CreateStepOptionRequest request) { if (!await batchRepository.DoesBatchExist(request.BatchId)) { throw Err.BatchNotFound(request.BatchId); } var step = await stepRepository.Get(request.BatchId, request.StepName); if (step == null) { throw Err.StepNotFound(request.StepName); } if (await stepRepository.DoesStepOptionExist(request.BatchId, request.StepName, request.OptionName)) { throw Err.StepOptionAlreadyExists(request.OptionName); } var stepOption = request.ConvertTo <StepOption>(); stepOption.StepId = step.Id; await stepRepository.CreateOrUpdateStepOption(stepOption); return(new CreateStepOptionResponse()); }