Explanation of how "waiting for retry" in the TT tachograph download module is working. How long it takes until an error is received?

If the tacho download has failed it does not get an error state immediately.
Failed Tacho downloads are put into the queue (with a message waiting to retry) and retried every 24 hours 3 times (in total 3 days).
Only if the tacho download fails after the third retry attempt - an error state according to the fail reasons is assigned.
If the problem wasn't fixed during a time when the system tries to retry the process, it will still show the same message.