We get the following Batch-TCK error when running on Java 21:

[INFO] — maven-enforcer-plugin:3.0.0-M3:enforce (enforce-versions) @ jakarta.batch.arquillian.exec —
[WARNING] Rule 0: org.apache.maven.plugins.enforcer.RequireJavaVersion failed with message:

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! TCK must be run with Java 11 thru 17 !
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE

Will look into why the above error is not detected as a failure.

https://github.com/jakartaee/batch-tck/issues/66 has been open for a while.