Dell Update Catalog Issue

Hi all,

in SCCM the last sync status of the Dell Business Client Updates Catalog is "Trust Failed"

In the log I can see this error:

[74, PID:6564][02/27/2019 14:45:37] :STATMSG: (SRVMSG_SMS_ISVUPDATES_SYNCAGENT_CATALOG_SYNC_FAILED).

What does this error mean and how can I solve this problem?