can you share your project? What PDL version are you using?
I just tested it with an empty project and it worked for me.
- changed ram section length for M0+ to 0x2000
- Changed ram section origion on M4 to 0x08002000
No error and debugging was possible.
When I tried 4kiB I got an error regarding a regarding an overflow of the ram region with the stack.
Thanks. I am running a big application so it can be some problem on my side with memory usage. I just wanted to make sure there are no limitations on the RAM starting address.