BPM uses the WebSphere UserRegistry.getUsersForGroup() call to retrieve user members of nested groups.
In order to get nested members from the API call getUsersForGroup(), you need to add/set a custom property:
"com.ibm.ws.wim.adapter.ldap.returnNestedNonGroupMembers" with value "true".
In order to set this property, do the following:
1) Stop all the servers and node agents.
2) From the deployment manager bin directory.
#./wsadmin.sh
Run below commands:
$AdminTask setIdMgrCustomProperty { -id my_Ldap_Repository_Id -name com.ibm.ws.wim.adapter.ldap.returnNestedNonGroupMembers -value true}
$AdminConfig save
3) Sync your nodes as needed.
4) Start your servers.