You're creating a new field in Admin > Studio and the field fails to save with the error shown here.
Don't panic; we've got you covered! With the recent release of Sugar 11.1.0 (Q3 2021), this helpful error message now appears when a field fails to save in Sugar due to hitting the row size limit of the table in your database. Check out the Troubleshooting Row Size Limit Errors in Sugar article for more info and see what you need to do to resolve this error and get back to creating your field.