redaction-service-v1/redaction-service-server-v1/src/main/java/com/iqser/red/service/redaction/v1/server/redaction/service/RedactionLogCreatorService.java

@@ -111,7 +111,7 @@ public class RedactionLogCreatorService {
                 .startOffset(entity.getBoundary().start())
                 .endOffset(entity.getBoundary().end())
                 .isDossierDictionaryEntry(entity.isDossierDictionaryEntry())
-                .engines(entity.getEngines())
+                .engines(entity.getEngines() != null ? entity.getEngines() : Collections.emptySet())
                 .reference(referenceIds)
                 .build();
     }