I once configured a Juniper MX204 and found an error:
libdyn_pcef retry cb, still not ready
authd[8776]: dyn prof: failed to register error=12
authd[8776]: dyn prof: failed to register with error = 12
The error arose due to the fact that I increased the size of the allocated memory for the configuration, i thought 698343424 is the default:
set chassis network-services enhanced-ip
set system services subscriber-management enable
set system configuration-database max-db-size 698343424
exit
request system reboot
I looked at the size of the installed RAM:
show chassis routing-engine
DRAM 16334 MB (16384 MB installed)
show system information
Junos: 19.4R3-S6.1
I looked at the recommended value on the official website
https://www.juniper.net/documentation/us/en/software/junos/subscriber-mgmt-getting-started/topics/topic-map/enhanced-subscriber-management.html#id-junos-os-enhanced-subscriber-management-overview
When I reduced the size to 300 megabytes, the error disappeared:
set system configuration-database max-db-size 300M
exit
request system reboot
You can see how much memory is used by the configuration with the command:
show system configuration database
See also my article:
Juniper MX204 setup