Create a new LDAP eWay (New > LDAP External System) under envA (envB for Berlin) and name it esLDAP.
Set the Environment Configuration > Connection properties for esLDAP as follows:
Initial Context Factory: com.sun.jndi.ldap.LdapCtxFactory
Provider URL: As necessary for your system, for Atlanta and Berlin (the two URLs must be different), according to the provided syntax, for example:
ldap://ex4:1389/o=bhex2_1,dc=stc,dc=com
Authentication: simple
Principal: As necessary for your system
Credentials: Password, as necessary for your system
A separate LDAP external system instance is required for each B2B Host.
For all other LDAP eWay (esLDAP) properties, accept the defaults.
When all properties have been configured correctly for your site, click OK.