Description:
TIBCO BusinessWorks Collaborator Installation Guide - "Install an Additional Workflow Server and Document Repository Server" section needs to be updated:

BWC server in HA group:

It refers "The additional workflow server can use the same name as the initial workflow server or a different name. Each additional workflow server must use the same database and database parameters as specified for the initial workflow server."  This is incorrect as the additional server name must be different than the initial server name; also additional server names cannot have the same name.

Document Repository server in HA Group:

The 3rd bullet of the section refers , "When installing the document repository server, use the same name and port number assigned to the initial document repository server on machine1"  which is incorrect. The second Repo Server should use the same name but  a different port.
Symptoms:

Cause:

TIBCO BusinessWorks Collaborator 5.3 document update for installing Workflow Servers in High-Availability Mode