Which DS-5 edition are you using (Community, Professional, Ultimate, etc...)?Arm 64-bit architecture (Armv8-A) support is only available with DS-5 Ultimate edition. If you have DS-5 Ultimate edition installed, you will need to make sure that DS-5 using an "DS-5 Ultimate Edition" license by opening Eclipse of DS-5 and going to "Help" -> "Arm License Manager..." -> "Select the toolkit that you intend to use:" -> "DS-5 Ultimate Edition".
This answers my question, thank you. I am using the Community version. I was misled by the line:
DS-5 Debugger for bare-metal development with Armv8-A Foundation Model.