I posted an answer, which seems to have disappeared
Short version:
- probably means a single column
- have read where this can be fixed by a compact/repair
- or there is code running in the wrong event
- or it happens when form is linked to and ODBC source and the record is not saved before re-selecting (the combo may initiate an edit, or code behind it might be doing so).
- if it's OK to save the record upon a new combo selection, do so in the (I think) BeforeUpdate event of the combo via
If Me.Dirty = True Then Me.Dirty = False
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.