Leave, expense and similar actions are confirmed with a one-time code sent to your phone. If the code does not arrive, check the following in order:
Look in your phone's spam or blocked messages folder.
Make sure the phone number held in the system is current and correct. If the number is wrong, the code goes to the wrong place.
Once the number is corrected, request the code again.
If you use a non-Turkish number
Codes can be sent to foreign numbers. Make sure your number is saved in the system with its country code and try again.
If you are abroad with roaming turned off
You cannot complete the approval step, because the SMS cannot reach you. The code for this approval step is sent to your phone number.
If your number is correct, your spam folder is clear and the code still does not arrive, you can contact support.