Below error is observed during MDM Link configuration:
MDM Link certificate was not imported from Proxy server to MDM server.
Following line in pmm_dep_service.log:
11-28 12:31:43.756 W /MdmCore:10324:2bc8/ Peer certificate is not trusted. Certificate Parallels DEP Service ('35fe3ad40fc347929280f8974644aebecc25a97c')
On the PMM Proxy server open local certificates, locate Parallels MDM Link certificate > Properties > Thumbprint:
Make sure that the same certificate, with the same Thumbprint is available on the MDM server.