This draft Corrigendum 1 to G.993.2 includes the following: The following has been included in the draft: 1. Revision of §11.2.3.8 based on GB-047 Issue 11.2.4 2. Clarification on the value of G based on CD-023R2 Issue 11.4.1 3. Clarification of SOC mapping rules based on GB-086 Issue 12.2.4.4 4. Text change for O-SIGNATURE MAXSNRM field based on GB-093 Issue 12.2.4.5 5. Estimation of the target total data rate based on CD-024R1 Issue 12.2.4.6 6. SOC message format during Loop Diagnostics Mode based on GB-050 Issue 12.3.1 7. Duration of O-P-QUIET 1 for Loop Diagnostic mode based on CD-051 Issue 12.3.2.1 8. Text changes to Loop Diagnostic mode based on CD-091 Issue 12.3.2.2 9. Text change to §12.4.3.2 of Loop Diagnostics mode based on C0117 Issue 12.3.3 Corrected 997 M1C PSD mask in Annex B