NIP/PESEL/REGON constraints do not consider the length of the validated value. Hence incorrect values can pass the validation. Examples of incorrect numbers that would pass current validation:

NIP

• 123-456-78-14113-312-310 (long)
• 123-45-62 (short)

REGON

• 1234567845 - 10 digits (long)
• 12345673 – 8 digits (short)

PESEL

• 920419795 (short)
• 92041903790123 (long)