I’m at the moment building a project.
This project should use my parent.pom from the Github registry.

It works perfectly on my machine, even if I delete the parent-pom from my .m2 repository
Unfortunately, I always get an error when Github tries to run the tests after each push, because the parent-pom can’t be resolved.

    [ERROR] Some problems were encountered while processing the POMs:
    [FATAL] Non-resolvable parent POM for io.joergi:basics:0.0.1-SNAPSHOT: Could not 
    transfer artifact io.joergi:parent-jdk11-mongo:pom:2.3.0-1.RELEASE from/to github 
    (https://maven.pkg.github.com/joergi/parent-jdk11-mongo): Transfer failed for 
    https://maven.pkg.github.com/joergi/parent-jdk11-mongo/io/joergi/parent-jdk11-
    mongo/2.3.0-1.RELEASE/parent-jdk11-mongo-2.3.0-1.RELEASE.pom 400 Bad Request and 
    'parent.relativePath' points at wrong local POM @ line 5, column 10

The parent-pom has this definition:

  <groupId>io.joergi</groupId>
	<artifactId>parent-jdk11-mongo</artifactId>
	<version>2.3.0-1.RELEASE</version>
	<packaging>pom</packaging>
	<name>joergi.io parent-jdk11-mongo</name>
&lt;parent&gt;
	&lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
	&lt;artifactId&gt;spring-boot-starter-parent&lt;/artifactId&gt;
	&lt;version&gt;2.3.3.RELEASE&lt;/version&gt;
	&lt;relativePath /&gt; &lt;!-- lookup parent from repository --&gt;
&lt;/parent&gt;

My new project use Github actions for automatic testing.
It integrates the parent pom like this:

    <parent>
		<groupId>io.joergi</groupId>
		<artifactId>parent-jdk11-mongo</artifactId>
		<version>2.3.0-1.RELEASE</version>
	</parent>
&lt;distributionManagement&gt;
	&lt;repository&gt;
		&lt;id&gt;github&lt;/id&gt;
		&lt;name&gt;GitHub joergi Apache Maven Packages&lt;/name&gt;
		&lt;url&gt;https://maven.pkg.github.com/joergi/parent-jdk11-mongo&lt;/url&gt;
	&lt;/repository&gt;
&lt;/distributionManagement&gt;

I also have a settings.xml in the new project

  <activeProfiles>
        <activeProfile>github</activeProfile>
      </activeProfiles>
  &lt;profiles&gt;
    &lt;profile&gt;
      &lt;id&gt;github&lt;/id&gt;
      &lt;repositories&gt;
        &lt;repository&gt;
          &lt;id&gt;github&lt;/id&gt;
          &lt;name&gt;GitHub joergi Apache Maven Packages&lt;/name&gt;
          &lt;url&gt;https://maven.pkg.github.com/joergi/parent-jdk11-mongo&lt;/url&gt;
        &lt;/repository&gt;
      &lt;/repositories&gt;
    &lt;/profile&gt;
  &lt;/profiles&gt;

  &lt;servers&gt;
    &lt;server&gt;
      &lt;id&gt;github&lt;/id&gt;
      &lt;username&gt;joergi&lt;/username&gt;
      &lt;password&gt;${{ secrets.PACKAGES_READ_ONLY }}&lt;/password&gt;
    &lt;/server&gt;
  &lt;/servers&gt;

The secret is in my Github secrets. If I remove or change it, I’m not authorized anymore, so this works.

Can one of you give me a hint, what is wrong

(I already posted it on StackOverflow, but no answer yet)