List supported values in exception

1 files changed, 3 insertions, 1 deletions

diff --git a/node-admin/src/main/java/com/yahoo/vespa/hosted/node/admin/maintenance/servicedump/VespaServiceDumperImpl.java b/node-admin/src/main/java/com/yahoo/vespa/hosted/node/admin/maintenance/servicedump/VespaServiceDumperImpl.java
index 66cc5e64b67..47ee9ba3d20 100644
--- a/node-admin/src/main/java/com/yahoo/vespa/hosted/node/admin/maintenance/servicedump/VespaServiceDumperImpl.java
+++ b/node-admin/src/main/java/com/yahoo/vespa/hosted/node/admin/maintenance/servicedump/VespaServiceDumperImpl.java
@@ -109,7 +109,9 @@ public class VespaServiceDumperImpl implements VespaServiceDumper {
             for (String artifactType : artifactTypes) {
                 ArtifactProducer producer = artifactProducers.get(artifactType);
                 if (producer == null) {
-                    handleFailure(context, request, startedAt, "No artifact producer exists for '" + artifactType + "'");
+                    String supportedValues = String.join(",", artifactProducers.keySet());
+                    handleFailure(context, request, startedAt, "No artifact producer exists for '" + artifactType + "'. " +
+                            "Following values are allowed: " + supportedValues);
                     return;
                 }
                 context.log(log, "Producing artifact of type '" + artifactType + "'");