public IActionResult Post(string customerId, [FromBody] TransactionDTo dto) { if (dto == null) { return(BadRequest()); } if (!ModelState.IsValid) { return(BadRequest(ModelState)); } var result = _transactionProvider.AddTransaction(customerId, dto); if (result == null) { return(StatusCode(500, "A problem occurred while handling your request.")); } return(CreatedAtRoute("GetTransaction", new { id = result.TransactionID }, result)); }