Access form suddenly started giving duplicate field error message!!

Is PatientEmployeesSchedule a table or a query?

If it is a query, check that query to make sure that there are not ID fields in two or more queries and make sure you explicitly identify which table the ID field is to come from?

Hi, Its a table..

Rather than posting the graphic, post the actual SQL string.  For all we know, there cold be another table hidden behind the one we see.

@Pat,
there you go.

SELECT PatientsEmployeesSchedule.*, 0-([VisitDateOnNotesYN]+[VisitShiftYN]+[NurseSignatureYN]+[NurseCredentialsYN]+[PatientsSignatureYN]) AS CountVisits, IIf([VisitDateOnNotesYN]+[VisitShiftYN]+[NurseSignatureYN]+[NurseCredentialsYN]+[PatientsSignatureYN]+[MemoFilledYN]=-5,"Yes","No") AS VisitNotesAppr, Format([Day],"ddd") AS WD, IIf(IsNull([employeeid]),0,mydatediff([from],[to])) AS Minutes, IIf(IsNull([employeeid]),mydatediff([from],[to]),0) AS Minutes2
FROM PatientsEmployeesSchedule
WHERE (((PatientsEmployeesSchedule.Day)>=Date()-365))
ORDER BY PatientsEmployeesSchedule.Day, PatientsEmployeesSchedule.From;

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Thanks.  I don't see any duplication in the query.  
Delete the RecordSource from the form.  Save it,  close it.  Then open the form and put back the RowSource.  If that doesn't fix the problem, try a compact and then a decompile.  Hopefully you won't have to rebuild the db by importing all the objects.  It looks like the form itself might be corrupted.

PS - Day is a reserved word as is From.  Both will be a problem when used in VBA so be careful to use square brackets.  Best practice of course is to not use embedded spaces, special characters, or reserved words as column names.

Hi Pat,

Ok by now I know that the issue is as follows, I have a combo box named EmployeeID displaying 2/3 columns ID, Name (and title).

When I sort by that field the form order by property is "Lookup_EmployeeID.Name", that is how access refers to these ComboBox.Column(x)...

Now that approach seems to have a limit how many records it can deal with, apparently we ran over the limit...(somewhere between 10/20K).

As you can see on link above, I still don’t have a satisfactory solution for that issue, I guess one solution would solve both problems.

Thanks,
Ben

Hi Pat,

See the following link for the final solution to this problem.

http://www.experts-exchange.com/questions/28711782/Access-combo-box-limitation.html

Thanks,
Ben