"You need to give us more information. Start with the RowSourceType, RowSource, ControlSource, and any code in Refresh or Requery."

RowSourceType = Alias
RowSource = csrCustomerSigners2
ControlSource = RLogBook.CustoCusto

Refresh: No code, yet there is inherited code from my framework:
* refresh

THIS.ENABLED=(THISFORM.AddMode OR THISFORM.EditMode)

RETURN

Requery: No code.

I use the “safe select” method to refresh cursors in the drop down list.

Interestingly enough, sometimes the drop down list will not include the value that is stored in the table record (RLogBook.CustoCusto) when editing existing data but all others from the “Signers” table exist.