How activate bas licence

Maybe you need to activate BAS function first on the slot, then try to load the license.

<HUAWEI> system-view
[~HUAWEI] slot 1
[~HUAWEI-slot-1] bas enable

did not help...

What is the error message?
Do you have VSU board install in the chassis? License items seems to be ordered for VSU boards.

MultiserviceEngine 60-X8's Device status:
-------------------------------------------------------------------------------
Slot # Type Online Register Status Role LsId Primary
-------------------------------------------------------------------------------
1 BSU Present Registered Normal LC 0 NA
3 VSU Present Registered Normal LC 0 NA
9 MPU Present Registered Normal MMB 0 Master
10 MPU Present Registered Normal MMB 0 Slave
11 SFU Present Registered Normal OTHER 0 NA
12 SFU Present Registered Normal OTHER 0 NA
13 SFU Present Registered Normal OTHER 0 NA
14 CLK Present Registered Normal OTHER 0 Master
15 CLK Present Registered Normal OTHER 0 Slave
16 PWR Present Registered Normal OTHER 0 NA
17 PWR Present Registered Normal OTHER 0 NA
18 FAN Present Registered Normal OTHER 0 NA
19 FAN Present Registered Normal OTHER 0 NA
-------------------------------------------------------------------------------
<BRASS>display device pic-status
Pic-status information :
--------------------------------------------------------------------------------
Pic# Status Type Port_count Init_result Logic_down
--------------------------------------------------------------------------------
1/0 Registered LAN_WAN_12x10GF_B_CARD 12 SUCCESS SUCCESS
3/0 Registered DVSU_SP_CARD 0 SUCCESS SUCCESS
--------------------------------------------------------------------------------

Another license for example nat, ds-lite - activate without problem, only bas license - activate problem
[BRASS-license]active bas sl
[~BRASS-license]active bas slot ?
<null> The available slot

Thank you for the output!

Yes, for BSU service board board (see slot 1), the function is automatically enabled after your activate the license so, you don't need to run any command such as active bus

how activate lic

For BRAS function, you don't need to activate the license.
For DS-LITE and NAT you can refer to the following:

<BRAS> system-view
[~BRAS] License
[*BRAS-license] active nat session-table size 2 slot 1 engine 0 \\ considering you plan to configure NAT for service boards on slot 1 and 3 equally
[*BRAS-license] active nat session-table size 2 slot 3 engine 0
[*BRAS-license] active ds-lite vsuf slot 3 \\ the only VSU board it's in slot 3
[*BRAS-license] commit

Some example of configuration from documentation to check:
http://support.huawei.com/hedex/pages/EDOC100017017631189548/03/EDOC100017017631189548/03/resources/software/nev8r9_vrpv8r15/user/ne/dc_ne_nat_cfg_0057.html?ft=0&fe=10&hib=7.18.2.15.1&id=dc_ne_nat_cfg_0057&text=Example%20for%20Configuring%20the%20Centralized%20NAT%20Function%20(Centralized%20Scenario)&docid=EDOC1000170176

DS-LITE
http://support.huawei.com/hedex/pages/EDOC100017017631189548/03/EDOC100017017631189548/03/resources/software/nev8r9_vrpv8r15/user/ne/dc_ne_ds-lite_cfg_0061.html?ft=0&fe=10&hib=7.18.3.14.2&id=dc_ne_ds-lite_cfg_0061&text=Example%20for%20Configuring%20Distributed%20DS-Lite&docid=EDOC1000170176

For BRAS function, you don't need to activate the license. If you need activate a license for your device you need to access to the ESDP platform to activate your license.

http://app.huawei.com/isdp/portalNew.html