Best practices for resolving syntax compilation errors in Microsoft Access

August 23, 2020 by Charles Avitia


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It seems that some readers have run into Microsoft Access compilation syntax error. This problem is caused by several factors. Now let's talk about some of them. This error can occur if your Access database contains an invalid reference and you tried to use any of the built-in Access functions like Left, Instr, Len, Year, Mid, etc. To fix this problem, you need to open the database Access. Press Alt + F11 to open a Microsoft Visual Basic window.



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In general, this is compiled and works fine. However, apparently, in random cases, a compilation error is generated during program execution, indicating that this field was not found. However, the field was still in the RecordSource of the form. Why did this happen?


What does #error mean in access?

#Mistake. The #Error error means that Access cannot evaluate the expression. For example, you may have specified incorrect or too few arguments for an aggregate function (sum function), used a parameter query as the domain for an aggregate function, or created a circular reference in an expression,

We prefer to use an invisible text box so that we can refer to the control name with an "I". Syntax instead of "I!" That's me. "The syntax is checked when the code is compiled to catch a typo in the control name. This is preferable to a runtime error when the user encounters this line of code.

But Why?

compile error syntax error microsoft access

While we knew how to fix this, we were curious as to why the compilation was inconsistent for all users. It also does not crash when a certain event has occurred. It seemed almost by accident thatWhere a compilation error occurred. And the form that threw the error looked great, with a reference to the field present in its RecordSource.

The Real Reason For The Compilation Error

What is access syntax error?

Error [42000] [Microsoft] [ODBC] Microsoft Access Driver] Syntax error (operator missing) in query expression "{name}". Cause: This error message occurs when the control character configured in Jet Data Manager does not match the control character used in the data source.

Through our own research and with the help of our colleagues at the Microsoft Access MVP, we discovered that the compilation error was due to a programmatic change in the form's RecordSource. Changes should not be made to the form in which the compilation error is thrown.

Microsoft Access seems to be resetting its internal list of field references after changing the RecordSource, causing a compilation error. This explains why some users experienced this and others did not, as it depended on whether or not they opened a form modifying their RecordSource. He also explained why the error did not occur immediately after changing the RecordSource.

Can't find project or library Microsoft Visual Basic?

The problem can be solved like this:
  1. Open a database or application.
  2. Open the module in design mode, or press Alt + F11 to switch to the Visual Basic Editor.
  3. On the Tools menu, select Links.
  4. Uncheck the box for a type library or object library marked missing:



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