diff --git a/dspace-api/src/main/java/org/dspace/identifier/IdentifierServiceImpl.java b/dspace-api/src/main/java/org/dspace/identifier/IdentifierServiceImpl.java
index cd28242a4b..d0b6e4417e 100644
--- a/dspace-api/src/main/java/org/dspace/identifier/IdentifierServiceImpl.java
+++ b/dspace-api/src/main/java/org/dspace/identifier/IdentifierServiceImpl.java
@@ -151,7 +151,7 @@ public class IdentifierServiceImpl implements IdentifierService {
                                                                             .getTypeText(dso) + ", "
                                  + dso.getID().toString() + ".");
                 } catch (IdentifierException e) {
-                    log.error(e.getMessage(), e);
+                    log.error(e);
                 }
             }
         }
@@ -161,6 +161,8 @@ public class IdentifierServiceImpl implements IdentifierService {
     @Override
     public List<String> lookup(Context context, DSpaceObject dso) {
         List<String> identifiers = new ArrayList<>();
+        // Attempt to lookup DSO's identifiers using every available provider
+        // TODO: We may want to eventually limit providers based on DSO type, as not every provider supports every DSO
         for (IdentifierProvider service : providers) {
             try {
                 String result = service.lookup(context, dso);
@@ -176,12 +178,14 @@ public class IdentifierServiceImpl implements IdentifierService {
                     identifiers.add(result);
                 }
             } catch (IdentifierNotFoundException ex) {
-                log.info(service.getClass().getName() + " doesn't find an "
+                // This IdentifierNotFoundException is NOT logged by default, as some providers do not apply to
+                // every DSO (e.g. DOIs usually don't apply to EPerson objects). So it is expected some may fail lookup.
+                log.debug(service.getClass().getName() + " doesn't find an "
                              + "Identifier for " + contentServiceFactory.getDSpaceObjectService(dso)
                                                                         .getTypeText(dso) + ", "
                              + dso.getID().toString() + ".");
             } catch (IdentifierException ex) {
-                log.error(ex.getMessage(), ex);
+                log.error(ex);
             }
         }