DCU's Service.log shows "Failed to get system ID from WMI using OEMStringArray Property"

This is more a WMI question, but hopefully someone here has experienced this same issue.

Dell Command | Update fails when checking for updates on a single PC.  It's a new Dell model that we are evaluating.  The messages in DCU are:

Unable to retrieve system inventory information, and

A problem occurred while checking updates.  The operation was aborted.  See the activity log for the specific failure details.

The message that caught my eye in Services.log is "Failed to get system ID from WMI using OEMStringArray Property".  Win32_ComputerSystem.OEMStringArray contains these elements:

[0] Default string

[1] Default string

[2] Default string

[3] Default string

[4] Ubuntu SN

[5] Default string

[6] Default string

[7] Default string

For reference, on a computer where DCU works, the values are:

[0] Dell System

[1] 1[0A20]

[2] 3[1.0]

[3] 12[www.dell.com]

[4] 14[1]

[5] 15[0]

[6] 27[<some 11-digit number that I don't know if I should obfuscate or not>]

I'm guessing that [1] 1[0A20] is what tells DCU the model.

What can I do to fix this? Does anyone know who/what sets these properties?  Or when?  Or how?