nRF52840 DK Sending twice the message if the payload is under 10 bytes

[PaulGui]

Hi community !

I create a model to send a string over mesh and it's working well ! The only thing which is strange is when my string is 9 bytes long (or under), the message will be send twice and when it's 10 or 121 bytes long, the message is sending only once. is it a known issue ?

Sincerely

PG 

[Mttrinh]

Hi,

I don't think this is a known issue, not that I am aware of at least. Yes, it is strange that this happens. When you say "the message is sent twice", is the message sent twice or retransmitted?

Have you gone through the code and checked if you have some sort of code that calls the sending function twice when sending 9bytes or under?

Could you provide me with some logs for the two scenarios? 

[PaulGui]

HI !
You were right about the retransmission. Cause this problem was happening when i was in debug mode (The retransmission is at 1 by default) so it reset the current value (which i put at 0 on nRF Mesh). So the message was resend and when the pyload was too much, it didn't