(b)To further improve the electronic reporting system and make the revised template available by the end of 2021 at the latest for it to be used for the submission of the fifth reports pursuant to Article 15 of the Stockholm Convention, taking into account experiences and feedback provided by Parties, the results of the survey on the difficulties faced by Parties in fulfilling their reporting obligations, the revised framework and indicators contained therein for the effectiveness evaluation pursuant to Article 16 of the Convention, as well as the results of other evaluations under the Convention, that is, the evaluations of polychlorinated biphenyls and of perfluorooctane sulfonic acid, its salts and perfluorooctane sulfonyl fluoride;