This message is generated when an attempt to enable hardware accelerated CFM fails on a particular slot. This can happen if the slot does not support the feature, if the connection to the kernel failed, or if some other failure prevented the kernel from handling the request.
Verify that the system is properly configured and running the correct software load. This message is generated at a point that "should never happen", so if it ddoes, other log messages should indicate other failures and this one is just a symptom of some other failure. You can also verify the HAL OAM database with the command: debug hal show platform hwa-oam all
Error
Failure attempting to enable Hardware Accelerated CFM.