Documentation about log

Hello,
I need your help in understanding the applicaiton logs.
Can anyone tell me what these errors tries to tell me?

chirpstack-network-server_1 | time=“2022-02-16T21:39:22.605699211Z” level=error msg=“finished unary call with code Unknown” ctx_id=828f698d-8e8d-4dd8-bbe0-6d187f7df0a7 error=“rpc error: code = Unknown desc = lorawan/band: invalid data-rate” grpc.code=Unknown grpc.method=SendProprietaryPayload grpc.service=ns.NetworkServerService grpc.start_time=“2022-02-16T21:39:22Z” grpc.time_ms=0.085 peer.address=“172.23.0.7:35474” span.kind=server system=grpc
chirpstack-application-server_1 | time=“2022-02-16T21:39:22.605875308Z” level=error msg=“finished client unary call” ctx_id="" error=“rpc error: code = Unknown desc = lorawan/band: invalid data-rate” grpc.code=Unknown grpc.ctx_id=828f698d-8e8d-4dd8-bbe0-6d187f7df0a7 grpc.duration=“600.266µs” grpc.method=SendProprietaryPayload grpc.service=ns.NetworkServerService span.kind=client system=grpc
chirpstack-application-server_1 | time=“2022-02-16T21:39:22.606255668Z” level=error msg=“send gateway ping error: send ping error: send proprietary payload error: rpc error: code = Unknown desc = lorawan/band: invalid data-rate”

Many Thanks

Roman

I believe you have enabled the gateway discovery, but configured a data-rate that isn’t valid for your region.