code: def reindex_sortable_title(portal):
      
      catalogs = [
          "bika_catalog",
          "bika_setup_catalog",
          "portal_catalog",
      ]
      for catalog_name in catalogs:
          logger.info("Reindexing sortable_title for {} ...".format(catalog_name))
          handler = ZLogHandler(steps=100)
          catalog = api.get_tool(catalog_name)
          catalog.reindexIndex("sortable_title", None, pghandler=handler)
          commit_transaction(portal)
docs: Reindex sortable_title from some catalogs