1. A CSD shall review at least annually its cooperation and information exchange measures with other entities referred to in Articles 61, 62 and 63. This review may be conducted in parallel with a review of the CSD link arrangements. When required by the competent authority, the CSD shall implement other cooperation and information exchange measures in addition to those specified in this Regulation.

2. When a CSD establishes links, they shall comply with the additional requirements provided in Article 86.

3. A CSD shall require its participants to reconcile their records with the information received from that CSD on a daily basis.

4. For the purposes of paragraph 3, the CSD shall provide participants on a daily basis the following information specified for each securities account and for each securities issue:

(a) the aggregated balance of a securities account at the beginning of the respective business day;

(b) the individual transfers of securities in or from a securities account during the respective business day;

(c) the aggregated balance of a securities account at the end of the respective business day.