I would guess that you all are missing an OrdlineStatus entry flagged as ‘Is Primary Staging’ - that’s required as the first place that Order Lines are moved. Normally, we have a location in place called ‘Doc Control’ or ‘Pending Release’ with that flag set, and when Orders are created, the lines are placed into that Work Location. You’ll see that error if that’s not defined.
You should be able to set by going to Admin >> Maintenance >> Data Maintenance, then selecting ‘Ordline Status’ as the table you want. You can either create a new location and flag it as ‘Is Primary Staging’, or mark an existing one. If you want to get their directly, you can go to https://YOUR_DOMAIN.cetecerp.com/tablemaint/OrdlineStatus/edit
Hope that helps!