Could you run etautil command as following format.
etautil -u ADMINUSER-p PASSWORD add 'eTGlobalUserContainerName=Global Users,eTNamespaceName=CommonObjects' eTGlobalUser eTGlobalUserName='GLOBAL USER NAME' in 'eTADSContainerName=OU_NAME,eTADSDirectoryName=ENDPOINT_NAME,eTNamespaceName=ActiveDirectory' eTADSAccount eTADSAccountName='ACCOUNT NAME' relationship=USERACCOUNT;
Execution Sample:
>etautil -u etaadmin -p Password01 add 'eTGlobalUserContainerName=Global Users,eTNamespaceName
=CommonObjects' eTGlobalUser eTGlobalUserName=testuser100 in 'eTADSContainerName
=Users,eTADSDirectoryName=<ServerHost>.<domain>.com,eTNamespaceName=ActiveDirectory'
eTADSAccount eTADSAccountName=testuser100 relationship=USERACCOUNT;
:ETA_S_0029<MGU>, Inclusion between Active Dir. Account 'testuser100' and Global
User 'testuser100' created successfully
:ETA_I_1336, ETAUTIL command completed Wed Mar 06 18:33:49 2019