[MODFISTO-432] Fixes from feedback

src/main/java/org/folio/service/transactions/batch/BatchTransactionService.java

@@ -65,7 +65,7 @@ public Future<Void> processBatch(Batch batch, RequestContext requestContext) {
     try {
       BatchTransactionChecks.sanityChecks(batch);
     } catch (Exception ex) {
-      logger.error(ex);
+      logger.error("Sanity checks before processing batch transactions failed", ex);
       return Future.failedFuture(ex);
     }
     populateMetadata(batch, requestContext.getHeaders());