diff --git a/src/utils/sync.ts b/src/utils/sync.ts
index 4477887..d35a6d1 100644
--- a/src/utils/sync.ts
+++ b/src/utils/sync.ts
@@ -2,6 +2,9 @@ import { Logger } from '@nestjs/common';
 
 /**
  * Runs `action` on each item, one at a time: a failing item is logged and skipped, the others are still processed.
+ * @param items
+ * @param action
+ * @param logger
  * @param describe label of an item in the error log, e.g. "Hiboutik brand 12".
  * @returns the number of failed items.
  */