Office 2021 LTSC SPLA Professional Plus install failure

Question

After creating the config.xml script below and running setup /download config.xml and setup /configure config.xml the program exits without errors, but has not installed the programs on the machine. It appears that the machine is set up for Office 365 as I can open Excel, but can't edit the Excel file locally. Outlook is not on the machine.

I've been through several installs/uninstalls trying different things. The non-SPLA install will install the applications, but they can't be activated with the SPLA MAK.

config.xml (Keys replaced with "XXXXX")

<Configuration ID="5501ec61-fa3f-442d-8228-a4fbb3176114">
<Add OfficeClientEdition="64" Channel="PerpetualVL2021">
<Product ID="ProPlusSPLA2021Volume" PIDKEY="xxxxx-xxxxx-xxxxx-xxxxx-xxxxx">
<Language ID="en-us" />
<ExcludeApp ID="Access" />
<ExcludeApp ID="Lync" />
</Product>
<Product ID="VisioPro2021Volume" PIDKEY="xxxxx-xxxxx-xxxxx-xxxxx-xxxxx">
<Language ID="en-us" />
<ExcludeApp ID="Access" />
<ExcludeApp ID="Lync" />
</Product>
</Add>
<Property Name="SharedComputerLicensing" Value="0" />
<Property Name="FORCEAPPSHUTDOWN" Value="FALSE" />
<Property Name="DeviceBasedLicensing" Value="0" />
<Property Name="SCLCacheOverride" Value="0" />
<Property Name="AUTOACTIVATE" Value="1" />
<Updates Enabled="TRUE" />
<RemoveMSI />
<AppSettings>
<Setup Name="Company" Value="NuMix Software" />
<User Key="software\microsoft\office\16.0\excel\options" Name="defaultformat" Value="51" Type="REG_DWORD" App="excel16" Id="L_SaveExcelfilesas" />
<User Key="software\microsoft\office\16.0\powerpoint\options" Name="defaultformat" Value="27" Type="REG_DWORD" App="ppt16" Id="L_SavePowerPointfilesas" />
<User Key="software\microsoft\office\16.0\word\options" Name="defaultformat" Value="" Type="REG_SZ" App="word16" Id="L_SaveWordfilesas" />
</AppSettings>
</Configuration>