Your firmware has concluded that further transmission would not be legal until more time has passed.
First you should research the regulation it is intended to achieve compliance with. Then consider if the limit is being correctly applied.
It may be that your intended usage (at least on this band in this jurisdiction) is not supportable. Or it may be that doing so requires more careful strategy over the length and interval of messages.
Your question is also a bit tangential here, as it is about the behavior of your node, not the behavior of a LoRaServer-based network.
Again, that is because your firmware has decided that it has already transmitted as much as legally allowed to, and will have to wait some time before transmitting any more.
hello friends i am using lorawan i cube library and github library development branch but both have issue in i cube not sending the data (by using the class A and ABP methode ) . developments branch code have tx timout and mcp busy is showing