Exceptions Unique Population Registry Code
1 exceptions
1.1 Ñ
1.2 common given names
1.3 catalog of inappropriate words
exceptions
several exceptions above rules exist, including:
Ñ
if step in above procedure leads letter Ñ appearing anywhere in curp, Ñ replaced x .
very common given names
when person has 2 given names , first given name maría, case women in mexico, or josé, in case of men, first name overlooked , fourth character taken second given name s initial. because names maría , josé common , generate many duplicates if used generate code.
for example, if person named maría fernanda escamilla arroyo, curp s first 4 characters eaaf because maría not count curp s fourth character when second given name present.
catalog of inappropriate words
to prevent words forming deemed palabras altisonantes (foul-sounding words, such profanity or pejoratives) in first 4 characters of string, catalog of inappropriate words (catálogo de palabras inconvenientes) lists many such possible combinations , provides replacements entail changing second letter, vowel, x .
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