Multiload + LDAP

All,
 
I am running muliload job. We have LDAP concept here. Our ID's are in sync with LDAP authentication.
When i am running my mulltiload job I am getting below error:(Also PFA attachment)
UTY1006 CLI error : 244, MTDP : EM_SSOLOGONFAIL(224): SSO logon failed by gateway.
Please help!!!
 
Thanks,
Tushar