Problem creating virtual switch in VSX R80.20 - CP5900

[Tarik_Malian]

We have been facing a problem during deploy of a VSX cluster.
We are implementing a new VSX cluster with a pair 5900 gateways.
Cluster creation seems to be ok, the problem occurs when we try to create a virtual switch: 

Checking connection with VSX
Generating VSX Configuration for VS-SW on SP2P-IRONGOAT.
Pushing VSX Configuration to SP2P-IRONGOAT.
SP2P-IRONGOAT-01: processed 14% of configuration...
SP2P-IRONGOAT-02: processed 14% of configuration...
Operation in progress...
SP2P-IRONGOAT-01: VSX configuration was applied successfully.
SP2P-IRONGOAT-02: VSX configuration was applied successfully.
Virtual Switch Processing Completed Successfully
Establishing Trust with - SP2P-IRONGOAT-01_VS-SW ...
The certificate is not valid.
Failed to establish trust with SP2P-IRONGOAT-01_VS-SW -
Establishing Trust with - SP2P-IRONGOAT-02_VS-SW ...
The certificate is not valid.
Failed to establish trust with SP2P-IRONGOAT-02_VS-SW -

Initiating trust with Virtual Switch operation has finished with warnings....

[PhoneBoy]

Check this SK: https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solut...