diff --git a/pom.xml b/pom.xml
index ed32974..4bf3e06 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>4.0.5</version>
+    <version>4.0.6</version>
     <relativePath/> <!-- lookup parent from repository -->
   </parent>
   <groupId>eu.dissco</groupId>
diff --git a/src/main/java/eu/dissco/backend/component/SchemaValidatorComponent.java b/src/main/java/eu/dissco/backend/component/SchemaValidatorComponent.java
index afe7f2e..0ef342f 100644
--- a/src/main/java/eu/dissco/backend/component/SchemaValidatorComponent.java
+++ b/src/main/java/eu/dissco/backend/component/SchemaValidatorComponent.java
@@ -17,7 +17,7 @@ public void validateAnnotationEventRequest(AnnotationEventRequest event, boolean
 				|| event.batchMetadata().getFirst().getSearchParams().isEmpty()) {
 			var searchParamSize = event.batchMetadata().isEmpty() ? 0
 					: event.batchMetadata().getFirst().getSearchParams().size();
-			log.error(
+			log.warn(
 					"Invalid annotationRequests event: contains {} annotationRequests (1 expected), {} batch metadata (1 expected), and {} searchParams (min 1)",
 					event.annotationRequests().size(), event.batchMetadata().size(), searchParamSize);
 			throw new InvalidAnnotationRequestException(
diff --git a/src/main/java/eu/dissco/backend/controller/BaseController.java b/src/main/java/eu/dissco/backend/controller/BaseController.java
index 9be952c..17f5e90 100644
--- a/src/main/java/eu/dissco/backend/controller/BaseController.java
+++ b/src/main/java/eu/dissco/backend/controller/BaseController.java
@@ -82,7 +82,7 @@ protected static Agent getAgent(Authentication authentication, String roleName)
 					.withOdsGupriLevel(GLOBALLY_UNIQUE_STABLE_PERSISTENT_RESOLVABLE)));
 		}
 		else {
-			log.error("Missing ORCID in token");
+			log.warn("Missing ORCID in token");
 			throw new ForbiddenException("Missing ORCID in token");
 		}
 	}
diff --git a/src/main/java/eu/dissco/backend/domain/annotation/AnnotationTargetType.java b/src/main/java/eu/dissco/backend/domain/annotation/AnnotationTargetType.java
index dfe0f30..46efd8f 100644
--- a/src/main/java/eu/dissco/backend/domain/annotation/AnnotationTargetType.java
+++ b/src/main/java/eu/dissco/backend/domain/annotation/AnnotationTargetType.java
@@ -26,7 +26,7 @@ public static AnnotationTargetType fromString(String type) {
 		if (DIGITAL_MEDIA.getName().equals(type)) {
 			return DIGITAL_MEDIA;
 		}
-		log.error("Invalid annotation target type {}", type);
+		log.warn("Invalid annotation target type {}", type);
 		throw new IllegalStateException();
 	}
 
diff --git a/src/main/java/eu/dissco/backend/service/DigitalMediaService.java b/src/main/java/eu/dissco/backend/service/DigitalMediaService.java
index 01815fc..6105cf6 100644
--- a/src/main/java/eu/dissco/backend/service/DigitalMediaService.java
+++ b/src/main/java/eu/dissco/backend/service/DigitalMediaService.java
@@ -181,12 +181,12 @@ public JsonApiListResponseWrapper scheduleMass(String id, List<MasJobRequest> ma
 			String orcid) throws NotFoundException, WebProcessingFailedException {
 		var digitalMedia = repository.getLatestDigitalMediaObjectById(id);
 		if (digitalMedia == null) {
-			log.error("Unable to find media with id {}", id);
+			log.warn("Unable to find media with id {}", id);
 			throw new NotFoundException("Media " + id + " not found");
 		}
 		var digitalSpecimen = digitalSpecimenRepository.getLatestSpecimenById(getDsDoiFromDmo(digitalMedia));
 		if (digitalSpecimen == null) {
-			log.error("Unable to find specimen for media with id {}", id);
+			log.warn("Unable to find specimen for media with id {}", id);
 			throw new NotFoundException("Unable to find related specimen for media with id " + id);
 		}
 		return masService.scheduleMas(id, masRequests, orcid, MjrTargetType.MEDIA_OBJECT, path);
diff --git a/src/main/java/eu/dissco/backend/service/DigitalSpecimenService.java b/src/main/java/eu/dissco/backend/service/DigitalSpecimenService.java
index ecfb2a1..ac30d35 100644
--- a/src/main/java/eu/dissco/backend/service/DigitalSpecimenService.java
+++ b/src/main/java/eu/dissco/backend/service/DigitalSpecimenService.java
@@ -242,7 +242,7 @@ private int getIntParam(String paramName, MultiValueMap<String, String> params,
 			}
 		}
 		catch (NumberFormatException ex) {
-			log.error("Param: {} cannot be parsed to a number, falling back to default", paramName, ex);
+			log.warn("Param: {} cannot be parsed to a number, falling back to default", paramName, ex);
 			return Integer.parseInt(defaultValue);
 		}
 	}