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Ksef
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Fa3
Field-validations
TNrNIP
Description
Tax identification number (NIP), matching the required 10-digit format: the first digit cannot be 0, the second and third digits cannot both be 0, and the last 7 digits can be any digits.
Constraints
pattern
Copied
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[1-9]((\d[1-9])|([1-9]\d))\d{7}