access_model_publish returns NRF_ERROR_FORBIDDEN error

[PreethiRaj]

I am working on the nr sdk for mesh application,When the nodes conncted to the network , it needs to configured before using nRF mesh app ,My  device also configured through this and working properly, After some days my device was not working then i debugged using segger tool, at the time i was getting the error like app_error_weak.c,  119, Mesh error 15 at 0x0002750D , then i searched  in nrf error.h file , Mesh error 15 is NRF_ERROR_FORBIDDEN , then i found it is comming from net_state_seqnum_alloc()

Inside the net_state_seqnum_alloc() , The condition  if (m_net_state.seqnum < m_net_state.seqnum_max_available)  got failed and returened  NRF_ERROR_FORBIDDEN.

When we configured the device newly that time ,

the m_net_state.seqnum < m_net_state.seqnum_max_available condition satisfied and when  m_net_state.seqnum is greater than the threshold value it will enter the iv_update_trigger_if_pending() function and it will be reset

m_net_state.seqnum = 0;

but when stop the debugger and  again start doing again and again ,at one point if (m_net_state.seqnum < m_net_state.seqnum_max_available)  condition getting failed and retured NRF_ERROR_FORBIDDEN, it didn't reset the m_net_state.seqnum = 0; and value also not stored in flash using  flash_store_iv_index()

Could anyone share why my device went to NRF_ERROR_FORBIDDEN state?

[Mttrinh]

Hi,

Really sorry for the late reply. 

Could you provide me with which SDK you are using and which device? Are you using a DK or a custom board? Can you also provide me with a step-by-step procedure on how to reproduce this?

[PreethiRaj]

Thanks for your kind reply, 

   i am using N52832 QFAAE0 1818DP custom board with one Button and one LED and SDK is nRF5_SDK_15.2.0_9412b96,  nrf5SDKforMeshv310src which act as a low power node, that device is configured through nrf mesh app and added in mesh network, when we press the button it will send the BLE message after some days if we press the same button the device not working so when i try to debug i got this error NRF_ERROR_FORBIDDEN

[Mttrinh]

Can you try reproducing this on a DK? If your able to reproduce it on a DK, can you provide me with a step-by-step procedure on how to reproduce this?

[Pendy]

I met the same issue in some case. maybe you can refer to this post

[Marciano-PL]

Indeed, I have witnessed the same error myself. I am fairly certain that when the IV index is incremented, the net_state module doesn't bother to reset the sequence number back to 0.

Each time I attempt to send a message, m_net_state.seqnum has the same value as m_net_state.seqnum_max_available. 

One would expect that once the maximum is reached, the sequence number would reset for the new index but that is not happening.