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 FileMaker Pro Custom Functions

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Validate_Generate_CNPJ ( fnType ; CNPJ )

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  Average rating: 4.3  (42 votes)
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Edward Souza, Duana A.S. Designs, LLC

A variation of Francisco Carlos Otani's

Sample Input:
Validate_Generate_CNPJ ( 1 , 123456789123 )
Sample Output:

 Then copy & paste into FileMaker Advanced's Edit Custom Function window.

Click here to copy To Clip Manager if you have myFMbutler's Clip Manager installed


The Brazilian Government IRS employs a Modulus 11 Algorithm variation to calculate a tax-oriented cadastral number -- compulsory to all companies countrywide -- entitled "CNPJ".
Francisco Carlos Otani wrote a useful CF ( to validate the cadastral number checksum digits, which are the last two of a series of 14 numerical digits. Looking at Otani's CF code, I realized it could be restructured modularly; it would be concurrently conciser and more abstract, hence used as the starting point to another Modulus 11 Algorithm variation. Also, since it validated checksum numbers, the CF could as well spawn them.

Note: these functions are not guaranteed or supported by Please contact the individual developer with any questions or problems.

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