Good Day All
Please anyone advise why this error comes up when trying to create a new project in TerraFlex from ArcPro using the T/Office Add-in:

I add two features from a GDB that I want to publish in TerraFlex. I set up the domains, field visibility etc. When I attempt to create a new project in the T/Office Add-in, this screen pop ups.
Note that I am new to this and could be doing something very basic wrong. I cannot figure out what I am doing incorrectly. Any advice will be appreciated.
software versions:
ArcPro V3.2
T/Office Add-in latest release
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Keshlen Reddy
Surveyor
eThekwini Water Services
Durban
South Africa
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