MC_CMD_FC_IN_LICENSE_LEN
uint8_t payload[MC_CMD_FC_IN_LICENSE_LEN];
req.emr_in_length = MC_CMD_FC_IN_LICENSE_LEN;
uint8_t payload[MAX(MC_CMD_FC_IN_LICENSE_LEN,
req.emr_in_length = MC_CMD_FC_IN_LICENSE_LEN;