The list control cannot find the lookup field in the designer. This form has been in production for months. It was working yesterday. All three forms show this error: new, edit, and update. However, the new and edit form are still working in SharePoint even with the error. The display form was working until I deleted the control and recreated it, thinking that might fix it.
I have rebooted the computer; installed windows updates; and checked the version of the designer (3.8.2). Any ideas?
Dear @tnewton,
Can you go into List Settings for the child list, show us the type of field you use as a Lookup field?
Dear @tnewton,
Please, try connecting to the source/child list with form editor, and open Settings > Customizers section:
You can also open console in the editor when you get the error:
Press CTRL+ALT+I and send us a screenshot.
Requested screenshots:
Dear @tnewton,
The issue here is with the customizers - we're checking them to see if any Lookup controls are valid as a selection. Something happened with the BU customizer - if it's some leftover field which is no longer used, you should remove the customizer, it should fix the issue.
If you have a form for that source/child list (the one containing BU field) then you can try to re-save the form, it will save customizer configuration once again and should also fix it.
That worked! Thank you very much for the help.
