Keil is not using hardware breakpoints

Hi
I am trying to debug a ROM code on M0+.
Even though the core supports 4 hardware breakpoints (BPUCOTNROL REG 0xE0002000 => 0x40) I am not able to set any break point.

Attempt to set any breakpoint and RUN results in the following message from Keil.
"This target device does not support all the defined breakpoints! Please reduce the number of breakpoints and start again"

Is there any setting that needs to be changed in Keil, to instruct it to use hardware breakpoint?

regards
Vichu

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