I'm not sure. The issue arose for us when attempting to target a Base DN in an heavily nested OU (obviously greater than 60 characters). Looking at an MS document, I see a 'Name Length Limitations for LDAP Simple Bind Operations' limitation of 255 characters, so that may be a target?
Another thing I noticed I couldn't configure to the extent I wanted was the From address on the email alerts tab. It would only accept an email address, and not a 'Company X vCloud Usage Meter Alerts <alerts@company.com>' formatted level of customization.
Regardless, I'm eager to see what advancements come to the appliance down the road. Thanks!