dmw | consultancy
tel 01732 833085
tonbridge · kent · UK

Access Forms and Reports
Text Boxes Display #Error


I use expressions as the Control Source for text boxes on forms and reports. Some of these work OK, but others throw #Error. I cannot see why. Do you know?

Applies To

This topic is relevant to Microsoft Access 97, 2000, 2002 (XP), 2003, 2007, 2010, 2013 and 2016.


Whether form or report, DMW finds the most common cause of the error is when the Name property of the text box control itself is the same as the name of a field assigned to the text box’s Control Source property.

Imagine a form based on a table that has a field named “TelNo”. Also, that a text box on the form is named “TelNo”. For the control source of the text box, you input

="Telephone No: " & [TelNo].

Now Access cannot make up its mind between TelNo the field and TelNo the text box, and as a result displays #Error.

Change the name of the text box to “tebTelNo”, say, and the Control Source expression to

="Telephone No: " & [tebTelNo]

The text box should behave, displaying for example

Telephone No: 01732 833085


DMW Consultancy Ltd does not accept any liability for loss or damage to data to which any techniques, methods or code included in this website are applied. Back up your data; test thoroughly before using on live data.

“O hateful error, melancholy’s child!
Why dost thou show, to the apt thoughts of men
The things that are not?”

William Shakespeare, Julius Caesar, (1599)