diff --git a/src/main/java/org/folio/services/finance/transaction/BaseTransactionService.java b/src/main/java/org/folio/services/finance/transaction/BaseTransactionService.java
index adf4f329..d1030adc 100644
--- a/src/main/java/org/folio/services/finance/transaction/BaseTransactionService.java
+++ b/src/main/java/org/folio/services/finance/transaction/BaseTransactionService.java
@@ -106,20 +106,20 @@ public Future<Void> batchUpdate(List<Transaction> transactions, RequestContext r
   }
 
   public Future<Void> batchRelease(List<Transaction> transactions, RequestContext requestContext) {
-    // NOTE: we will have to use transactionPatches when it is available
+    // NOTE: we will have to use transactionPatches when it is available (see MODINVOICE-521)
     transactions.forEach(tr -> tr.getEncumbrance().setStatus(Encumbrance.Status.RELEASED));
     return batchUpdate(transactions, requestContext);
   }
 
   public Future<Void> batchUnrelease(List<Transaction> transactions, RequestContext requestContext) {
-    // NOTE: we will have to use transactionPatches when it is available
+    // NOTE: we will have to use transactionPatches when it is available (see MODINVOICE-521)
     transactions.forEach(tr -> tr.getEncumbrance().setStatus(Encumbrance.Status.UNRELEASED));
     return batchUpdate(transactions, requestContext);
   }
 
 
   public Future<Void> batchCancel(List<Transaction> transactions, RequestContext requestContext) {
-    // NOTE: we will have to use transactionPatches when it is available
+    // NOTE: we will have to use transactionPatches when it is available (see MODINVOICE-521)
     transactions.forEach(tr -> tr.setInvoiceCancelled(true));
     return batchUpdate(transactions, requestContext);
   }