Cmc.log is full of Errors: Error creating RRD for pnp_multiple... but this RRD exists

[jamal]

Thank you Andreas,
Your solution solved the problem.
Solution:
Create RRD rules for hosts/services
omd stop
cmk -v --convert-rrds --delete-rrds
cmk -v --convert-rrds
omd start
Kind regards,
Jamal