How to Fix the Excel Ambiguous Name Detected SpellNumber Error
Question details
The user needs to resolve an ambiguous name error specifically related to the SpellNumber function in their VBA project.
- Product
- Microsoft Excel
- Device & OS
- not provided
- Scenario
- Running a custom macro or calculating a worksheet that relies on the custom SpellNumber VBA function.
- Observed behavior
- Excel displays a compile error stating 'Ambiguous name detected: SpellNumber', which stops the macro from running or the formulas from calculating.
Ensure you have the Developer tab enabled in your Excel ribbon, as you will need to access the Visual Basic Editor to inspect your macros and resolve naming conflicts.
Locate and Remove Duplicate SpellNumber Procedures in the VBA Editor
This error occurs because there are multiple procedures (macros or functions) named 'SpellNumber' in your workbook. Removing or renaming the duplicate will resolve the conflict.
VBA requires every procedure within a single scope to have a unique name. When you import or copy VBA code multiple times, duplicate macros can be created. The Visual Basic Editor's search tool is the fastest way to locate these duplicates.
Press the keyboard shortcut 'Alt + F11', or go to the Developer tab on the Excel ribbon and click the 'Visual Basic' button.
In the Visual Basic Editor, press 'Ctrl + F' to open the Find dialog box. Type 'SpellNumber' into the 'Find What' field.
Under the 'Search' section of the Find dialog, select 'Current Project' to ensure you scan all modules in your workbook. Click 'Find Next'.
Review the code blocks highlighted by your search. If you find more than one 'Function SpellNumber' or 'Sub SpellNumber', either delete the extra block of code entirely or rename it (for example, to 'SpellNumber_Old').
Click 'Debug' in the top menu and select 'Compile VBAProject'. If no further errors pop up, the ambiguous name conflict is resolved. Save your workbook.
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Frequently Asked Questions
What does 'Ambiguous name detected' mean in Excel VBA?
This compile error means that the VBA project contains two or more procedures (like Subs, Functions, or Properties) with the exact same name within the same module or scope. The VBA compiler cannot determine which one you intend to run.
Is SpellNumber a built-in Excel function?
No, SpellNumber is not a native Excel function. It is a custom VBA macro provided by Microsoft support documentation to convert numeric values into English words (e.g., for writing checks). You must add it via the Visual Basic Editor.
How do I check if my Excel file has hidden modules causing the error?
Open the Visual Basic Editor (Alt + F11) and press 'Ctrl + R' to display the Project Explorer. This pane will list all modules, user forms, and sheet objects. You can double-click each module to inspect its code for duplicate functions.
Will renaming the VBA module fix the ambiguous name error?
No, renaming the module itself will not resolve the issue. The error is caused by the name of the procedure (the 'Function' or 'Sub' name) inside the module, not the module's container name. You must edit the code inside the module directly.
