Thanks for reporting this!

This is actually a bit non-intuitive. To solve this we actually don't need to change _configprops.adoc, this file is automatically generated during the build so any change there will just be overwritten eventually and the problem will show up again.

The problem here is that we have added the property unnecessarily here: https://github.com/spring-cloud/spring-cloud-commons/blob/4.1.x/spring-cloud-commons/src/main/resources/META-INF/additional-spring-configuration-metadata.json#L62-L67

When the metadata will automatically be generated from the @ConfigurationProperties class here https://github.com/spring-cloud/spring-cloud-commons/blob/4.1.x/spring-cloud-commons/src/main/java/org/springframework/cloud/client/loadbalancer/LoadBalancerProperties.java#L225

That is why it ends up duplicated in _configprops.adoc.

The real change needs to be made in additional-spring-configuration-metadata.json basically removing that property.

Then if you run ./mvnw clean package -Pdocs you should see the elimination of the duplicate property in _configprops.adoc.

Also it would be great if you make this PR against the 4.1.x branch and we can then merge it forward to the other branches since they all have the same problem.

@ryanjbaxter
thanks for review!

I followed your instructions and found there's no duplicate metadata in target/classes/META-INF/spring-configuration-metadata.json .
(I wonder why the property in additional-spring-configuration-medata.json failed to override the auto-generated one. let me figure it out further.)

target branch is also updated.