Field names can't have spaces in AGOL.
This idea is for AGOL to automatically remove leading and trailing spaces when the user hits the 'Add field' button, rather than throwing an error and forcing the user to remove the spaces manually.

Example Use case:
Apps like Office 365 Word automatically insert spaces after list values when copying to the clipboard. The space gets silently pasted into AGOL, which causes an annoying error when saving the field.
