public async Task <IActionResult> Get(string certificateId) { var response = await _service.GetLettersAsync(new GetLettersRequest() { CertificateId = certificateId }); if (response.BusinessMessages != null && response.BusinessMessages.Length > 0) { return(BadRequest(response.BusinessMessages)); } var mappedModels = _mapper.Map <IEnumerable <ThabLetter> >(response.Value?.Letters); return(Ok(mappedModels)); }