liquibase - 1 change sets had duplicate identifiers

Question

Liquibase tells me :

1 change sets had duplicate identifiers
          classpath:config/liquibase/changelog/20160610094343_changelog.xml::1465551835616-1::techvalley (generated)

I have looked for id 1465551835616-1 in the code of my app, it's only in the file 20160610094343_changelog.xml (and only once). I don't understand where this error can come from.

Answer 1

This can occur if the same changelog file is included twice in your master.xml file