Dell n2048 - MMU MTRO PAR generic parity error

Hi,

On a stack of two n2048 we have the following message each second

<187> Jun 24 17:28:53 0.0.0.0-1 DRIVER[bcmDPC]: broad_hpc_drv.c(4428) 4172059 %% Unit: 0
Blk: 3 MMU MTRO PAR generic parity error.
Unit: 0
Blk: 3 MMU MTRO PAR generic parity error.

<187> Jun 24 17:28:53 0.0.0.0-1 DRIVER[bcmDPC]: broad_hpc_drv.c(4428) 4172060 %% Unit: 0
Blk: 3 MMU MTRO PAR generic parity error.
Unit: 0
Blk: 3 MMU MTRO PAR generic parity error.

Does someone know what it means?