I'm sure every Notes developer has seen this error message some time. Of course the error message indicates that....well..the field is too large, but the error doesn't tell you which field that is. Got it today in an application that has several large fields, so after half an hour of poking around and not finding any problem with my fields, read somewhere that this can happen when the $UpdatedBy field gets too large. I went into the database properties and in the last tab set the "Limit entries in $UpdatedBy fields" to 10, and no more error messages. Gotta love Notes error messages!