The control source property of the selected control in Access is not a valid expression or field name.
You can do one or more of the following:
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To edit the Control Source property in the property sheet, click Edit the Control's Control Source Property on the Error Checking Options
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To edit the Record Source property of the form or report, click Edit the Form's (or Report's) Record Source Property on the Error Checking Options menu.
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To ignore this error and hide the Error Checking Options button, click Ignore Error on the Error Checking Options menu.
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To turn off error checking for controls with an invalid control source, click Error Checking Options on the Error Checking Options menu. On the Error Checking tab, under Form/Report Design Rules, clear the Invalid control properties check box.
Note: You can also access the Error Checking settings by clicking File > Options. In the left pane of the Access Options dialog box click Object Designers. The Error Checking settings are at the bottom of this tab.
