<parent>
  ...
  <version>${platform.version}</version>
<parent>

IntelliJ报错： properties in parent definition are prohibited

解决：

• idea的错误提示，不用管
• 或者升级到maven3.5.2及以上（推荐）
  • 改为<version>${revision}</version>
  • flatten-maven-plugin 好像可以不增加

参考（较少，较好）：

• https://chenyongjun.vip/articles/98
  • https://intellij-support.jetbrains.com/hc/en-us/community/posts/360000439484-properties-in-parent-definition-are-prohibited-on-mac-osx-Intellij-2018-1-2
  • https://youtrack.jetbrains.com/issue/IDEA-183383

IntelliJ IDEA Bundled Maven version is 3.3.9, this is the 2015 version. Please update it to the latest version 3.5.2.

• https://stackoverflow.com/questions/45598007/properties-in-parent-definition-are-prohibited-in-the-intellij-maven-on-my-mac-o
• https://maven.apache.org/maven-ci-friendly.html