jar.exe -J-ea -J-esa cf moduleExports\\test.jar -C moduleExports\\classes\\base . --release 10 -C moduleExports\\classes\\v10 .]
java.lang.Error: Error in message file
at jdk.jartool/sun.tools.jar.Main.getMsg(Main.java:187)
at jdk.jartool/sun.tools.jar.Validator.checkModuleDescriptor(Validator.java:386)
at jdk.jartool/sun.tools.jar.Validator.validate(Validator.java:162)
at jdk.jartool/sun.tools.jar.Validator.lambda$validate$1(Validator.java:87)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1378)
at java.base/java.util.stream.SortedOps$RefSortingSink.end(SortedOps.java:390)
at java.base/java.util.stream.Sink$ChainedReference.end(Sink.java:258)
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:485)
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.base/java.util.stream.ReferencePipeline.forEachOrdered(ReferencePipeline.java:435)
at jdk.jartool/sun.tools.jar.Validator.validate(Validator.java:87)
at jdk.jartool/sun.tools.jar.Validator.validate(Validator.java:78)
at jdk.jartool/sun.tools.jar.Main.validateAndClose(Main.java:437)
at jdk.jartool/sun.tools.jar.Main.run(Main.java:335)
at jdk.jartool/sun.tools.jar.Main.main(Main.java:1651)

test tools/jar/multiRelease/ApiValidatorTest.java in ProblemList
To reproduce run the test