Between mid April and May 2021, IBM i 7.4 TR4 was released along with Db2 for i PTF Group SF99704 Level 13, as well as IBM i 7.3 TR 10 along with Db2 for i PTF Group SF99703 Level 24. You can get a quick overview over the enhancements for IBM i 7.4 at https://www.ibm.com/support/pages/ibm-i-74-tr4-enhancements and for IBM i 7.3 at https://www.ibm.com/support/pages/ibm-i-73-tr10-enhancements. A general entry point for the various Technology Refreshes with their enhancements can be found at https://www.ibm.com/support/pages/node/1119129.
The SAP Support Required PTF Lists, formerly known as Information APARs, have been updated to include these new levels. Together with the Technology Refreshes and the Db2 for i PTF groups, the cumulative PTF packages and the High Impact/Pervasive PTF groups were updated, and some individual PTFs were added. The PTF lists can be found at the following links:
IBM i 7.2: https://www.ibm.com/support/docview.wss?uid=ibm10883472
IBM i 7.3: https://www.ibm.com/support/docview.wss?uid=ibm10883474
IBM i 7.4: https://www.ibm.com/support/docview.wss?uid=ibm10883450
We recommend that you apply the current PTF levels for preventive maintenance whenever you are performing your next scheduled maintenance.