anchor.diff:  communication when running in
   {ref}/bootstrap-checks.html#_development_vs_production_mode[production mode]. See
   {xpack-ref}/encrypting-communications.html[Encrypting Communications].
  ++
  +--
  +IMPORTANT: Before you start {es}, you must perform the steps described in
  +{xpack-ref}/ssl-tls.html[Setting up TLS/SSL on a cluster]. Otherwise, errors
  +occur at startup.
  +
  +--
   * A new bootstrap check enforces that HTTPS is used by the built-in token
   service when running in
   {ref}/bootstrap-checks.html#_development_vs_production_mode[production mode].
  
positive.code: 
  No breaking changes have been made (yet).
  
  ////
  [role="xpack"]
  [[breaking-6.0.1-xes]]
  == {xpack} Breaking changes in 6.0.1
  
  ////
  
  [role="xpack"]
  [[breaking-6.0.0-xes]]
  
negative.code: This section summarizes the changes that you need to be aware of when migrating
  your application from one version of {xpack} to another.
  
  * <<breaking-6.2.0-xes>>
  * <<breaking-6.1.0-xes>>
  * <<breaking-6.0.0-xes>>
  
  See also:
  