| Letter Circular No. | Title |
| Letter Circular No. 2022-16 | List of Submitting Entities in Production as of 29 December 2022 |
| Letter Circular No. 2022-14 | List of Submitting Entities in Production as of 28 November 2022 |
| Letter Circular No. 2022-12 | List of Submitting Entities in Production as of 28 October 2022 |
| Letter Circular No. 2022-11 | List of Submitting Entities in Production as of 30 September 2022 |
| Letter Circular No. 2022-10 | List of Submitting Entities in Production as of 26 August 2022 |
| Letter Circular No. 2022-09 | List of Submitting Entities in Production as of 28 July 2022 |
| Letter Circular No. 2022-08 | List of Submitting Entities in Production as of 24 June 2022 |
| Letter Circular No. 2022-07 | List of Submitting Entities in Production as of 27 May 2022 |
| Letter Circular No. 2022-06 | List of Submitting Entities in Production as of 29 April 2022 |
| Letter Circular No. 2022-04 | List of Submitting Entities in Production as of 31 March 2022 |
| Letter Circular No. 2022-03 | List of Submitting Entities in Production as of 28 February 2022 |
| Letter Circular No. 2022-01 | List of Submitting Entities in Production as of 31 January 2022 |