#1000: update schema with id optional for div

opened by njr2128

but create rule for throwing a warning for these instances


njr2128 commented:

reference #999 and the spreadsheet: errors logged in GD, https://docs.google.com/spreadsheets/d/13R19RkmicK-fxoeaFh9SVrLzwBzdUb2oR7gisl2iOEY/edit?usp=sharing