system,error,critical login failure for user from

hi everyone i have solarwinds for monitor my network and i have large number of Mikrotik devices

in NCM (network configuration management) I’m get this error for large of mikrotik devices :

Cannot Log into Device : bad password. Device IP: 192.168.132.198

my “ncm” user is set on CiscoACS and access able on every device , when i try to login to that device “192.168.132.198”
i logged in without any problem but i see this on mikrotiks log :

 system,error,critical login failure for user from

when i use solarwinds auto check login i see that, some times login will be something like this :

user :
password : ncm_backupuser

password_for_cm_user

it seems that when mikrotik need username, solarwinds enter nothing , and when it should enter password it enter username,
and 2 line after that it enter password,

because of that i get this error :

 system,error,critical login failure for user from

as you see mikrotik get null or empty on username field , but when i manually want that to login to this after 1 or 2 times it will be ok
and there is no error about that and until two or three days i will not get any error from this mikrotik device

now whit this data please help me to solve this error