diff --git a/src/main/java/app/coronawarn/testresult/authorizationcode/AuthorizationCodeCopier.java b/src/main/java/app/coronawarn/testresult/authorizationcode/AuthorizationCodeCopier.java
index 22467a7..60598ae 100644
--- a/src/main/java/app/coronawarn/testresult/authorizationcode/AuthorizationCodeCopier.java
+++ b/src/main/java/app/coronawarn/testresult/authorizationcode/AuthorizationCodeCopier.java
@@ -49,15 +49,21 @@ public class AuthorizationCodeCopier {
   @Scheduled(initialDelay = 2000, fixedDelayString = "${testresult.authorizationcode.transfer.rate}")
   @Transactional
   public void copyACs() {
+    log.debug("AC Transfer - Copying ACs");
     List<AuthorizationCodeEntity> all = authorizationCodeRepository.findAll();
 
+    log.debug("AC Transfer - Found to copy ACs {}",all);
+
     ResponseEntity<Void> voidResponseEntity = submissionServerGateway.processAuthorizationCodes(
       AuthorizationCodeRequest.withAuthorizationCodes(all));
 
     if (voidResponseEntity.getStatusCode().isError()) {
-      log.error("Error while processing authorization codes by submission server");
+      log.debug("AC Transfer - Error while processing authorization codes by submission server");
     }
+
     authorizationCodeRepository.deleteAll(all);
+
+    log.debug("AC Transfer - Done copying {} ACs",all.size());
   }
 
 }
diff --git a/src/main/java/app/coronawarn/testresult/authorizationcode/AuthorizationCodeService.java b/src/main/java/app/coronawarn/testresult/authorizationcode/AuthorizationCodeService.java
index 4a0abd3..8f3e357 100644
--- a/src/main/java/app/coronawarn/testresult/authorizationcode/AuthorizationCodeService.java
+++ b/src/main/java/app/coronawarn/testresult/authorizationcode/AuthorizationCodeService.java
@@ -29,6 +29,7 @@
 import java.security.PrivateKey;
 import java.security.Signature;
 import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Component;
 
 /**
@@ -44,6 +45,7 @@
  * It is important to only generate 1 such signature for a test result to avoid having duplicates in the database.
  * </p>
  */
+@Slf4j
 @Component
 @RequiredArgsConstructor
 public class AuthorizationCodeService {
@@ -68,6 +70,8 @@ public void generateAndSaveAuthorizationCode(TestResultEntity testResultEntity)
 
     try {
 
+      log.debug("AC Generation - Start AC generation for {}",testResultEntity.getMobileTestId());
+
       AuthorizationCodeEntity authorizationCodeEntity = new AuthorizationCodeEntity();
 
       PrivateKey privateKey = PemUtils.getPrivateKeyFromString(testResultConfig.getSignature().getPrivateKeyContent());
@@ -80,8 +84,11 @@ public void generateAndSaveAuthorizationCode(TestResultEntity testResultEntity)
 
       authorizationCodeRepository.save(authorizationCodeEntity);
 
+      log.debug("AC Generation - Generated and saved AC {}",authorizationCodeEntity);
+
     } catch (Exception ex) {
-      throw new IllegalArgumentException("Unable to generate and save authorization code",ex);
+      log.error("AC Generation - Unable to generate and save authorization code",ex);
+      throw new IllegalArgumentException("AC Generation - Unable to generate and save authorization code",ex);
     }
 
   }
diff --git a/src/main/java/app/coronawarn/testresult/entity/AuthorizationCodeEntity.java b/src/main/java/app/coronawarn/testresult/entity/AuthorizationCodeEntity.java
index 23192ff..682bcb0 100644
--- a/src/main/java/app/coronawarn/testresult/entity/AuthorizationCodeEntity.java
+++ b/src/main/java/app/coronawarn/testresult/entity/AuthorizationCodeEntity.java
@@ -36,6 +36,7 @@
 import lombok.NoArgsConstructor;
 import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
+import lombok.ToString;
 import lombok.experimental.Accessors;
 import org.springframework.data.annotation.CreatedDate;
 import org.springframework.data.annotation.LastModifiedDate;
@@ -52,6 +53,7 @@
 @Accessors(chain = true)
 @NoArgsConstructor
 @RequiredArgsConstructor
+@ToString
 @Entity
 @EntityListeners(AuditingEntityListener.class)
 @Table(name = "authorization_code")