package org.zalando.nakadi.config;

public final class KPIEvents {
    public static final String ACCESS_LOG = "nakadi.access.log";
    public static final String BATCH_PUBLISHED = "nakadi.batch.published";
}

package org.zalando.nakadi.config;

public final class KPIEventTypes {
    public static final String ACCESS_LOG = "nakadi.access.log";
    public static final String BATCH_PUBLISHED = "nakadi.batch.published";
}

Update core-common/src/main/java/org/zalando/nakadi/config/KPIEvents.java