ValidPZN ( Code )
Calculate the check digit of german PZN (Pharma Zentral-Nummer).
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Function definition: (Copy & paste into FileMaker's Edit Custom Function window)
Calculate the check digit of german PZN (Pharma Zentral-Nummer). Don't confuse it with the "Heilmittelnummer".
The PZN is based on Code39 and has always 7 digits. The last is the check digit. If the result of validation is a 10 the PZN isn't used.
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