I want to use SQL 2017 CU21
but the last supported CU of SQL 2017 is CU19, which was released in february 2020.
Is the current compatibilty chart up to date? Are there any expected failures after installing newer CUs?
the compatibilty chart is usually updated once a month and the current one is from the 16th of November.
Unfortunately I am not able to tell you anything about planned compatibility but someone from Veritas might be able to. We rely on the details of the compatibility chart and have therefore not tested a newer release so far.