diff --git a/accession-commons-core/src/main/java/uk/ac/ebi/ampt2d/commons/accession/core/AccessioningService.java b/accession-commons-core/src/main/java/uk/ac/ebi/ampt2d/commons/accession/core/AccessioningService.java
index bca65c28..1edf58e4 100644
--- a/accession-commons-core/src/main/java/uk/ac/ebi/ampt2d/commons/accession/core/AccessioningService.java
+++ b/accession-commons-core/src/main/java/uk/ac/ebi/ampt2d/commons/accession/core/AccessioningService.java
@@ -43,6 +43,8 @@ public interface AccessioningService<MODEL, HASH, ACCESSION> {
      * stored in the repository.
      *
      * @param messages List of objects to be accessioned or already accessioned
+     * @param applicationInstanceId The id of the application(instance) that is trying to generate the accessions.
+     *        This id will be used by the underlying Accession generator when reserving blocks for generating accessions.
      * @return List of wrapper objects containing the accessioned objects and their associated accessions and hashes
      * @throws AccessionCouldNotBeGeneratedException when accession could not be generated
      */
diff --git a/accession-commons-monotonic-generator-jpa/src/main/java/uk/ac/ebi/ampt2d/commons/accession/generators/monotonic/MonotonicAccessionGenerator.java b/accession-commons-monotonic-generator-jpa/src/main/java/uk/ac/ebi/ampt2d/commons/accession/generators/monotonic/MonotonicAccessionGenerator.java
index 55704ae3..9351df27 100644
--- a/accession-commons-monotonic-generator-jpa/src/main/java/uk/ac/ebi/ampt2d/commons/accession/generators/monotonic/MonotonicAccessionGenerator.java
+++ b/accession-commons-monotonic-generator-jpa/src/main/java/uk/ac/ebi/ampt2d/commons/accession/generators/monotonic/MonotonicAccessionGenerator.java
@@ -123,6 +123,7 @@ public synchronized long[] generateAccessions(int numAccessionsToGenerate, Strin
      * Ensures that the available ranges queue hold @param totalAccessionsToGenerate or more elements
      *
      * @param totalAccessionsToGenerate
+     * @param applicationInstanceId - The id of the application(instance) that is trying to reserve the block
      */
     private synchronized void reserveNewBlocksUntilSizeIs(int totalAccessionsToGenerate, String applicationInstanceId) {
         while (!blockManager.hasAvailableAccessions(totalAccessionsToGenerate)) {