Errors using special characters in Access databases - Office
https://learn.microsoft.com/en-us/office/troubleshoot/access/error-using-special-characters
WebMar 17, 2023 · Access naming conventions. Microsoft recommends that you do not use a period (.), an exclamation mark (!), a grave accent (`), a bracket ([ ]), a space ( ), or a quotation mark (") inside the names of functions, the names of variables, the names of fields, or the names of database objects such as tables and forms.
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