Hi Bernhard,

You can return the data needed in the Create action, refer to the following code:

// POST api/sample/create
[HttpPost]
[ProducesResponseType(StatusCodes.Status201Created)]
[ProducesResponseType(StatusCodes.Status500InternalServerError)]
public ActionResult Create([FromBody]D_Department department)
{
    try
    {
        int count = _sampleService.Create(department);

        if (count == 0)
        {
            return StatusCode(StatusCodes.Status500InternalServerError);
        }

        // Return HTTP code 201 with URI in the Header and model in the Body.
        return Created($"api/sample/retrieveone/{department.Departmentid}", department);
    }
    catch (Exception ex)
    {
        return StatusCode(StatusCodes.Status500InternalServerError, ex.Message);
    }
}

Regards,

Logan