City and district names must match exactly
When creating a shipment, Horoz Lojistik matches city and district names against records in its own system. So the sender's city and district have to be written in the form Horoz recognises; common abbreviations or alternative spellings may not be accepted. In most cases where shipment creation is rejected, this mismatch in the address fields is the cause.
The sender's title is automatically converted to upper case and adjusted to the Turkish character rule — this is Horoz's own convention, and the form you typed is not preserved. Seeing it differently in the panel is not an error.