Musk may not be able to name his child X-A-12, according to California’s birth registration manual.

On May 4, Tesla CEO Elon Musk and his singer girlfriend Grimes announced the birth of their first child, the news sparked a stir on the Internet,media reported. Most concerning, however, was the child’s name, with Musk later tweeting: “X-A-12 Musk.”

Musk may not be able to name his child X-A-12, according to California's birth registration manual.

The first question in most people’s mind is how the name is pronounced. Both Grimes and Musk have said differentthings before, so the answer to that question is still inconclusive.

The netizens have since asked more questions, including whether Musk and Grimes (real name Claire Boucher) can really give their children the name X-A-12.

Musk may not be able to name his child X-A-12, according to California's birth registration manual.

According to California’s birth registration manual, babies can only have 26 English letters, except for names such as “O’Hare” or “Smith-Jones, ” which contain characters or apostrophes, according to Avery Hartmans of business insider. A name cannot contain numeric characters or double notes such as “twisted” or “twisted”, which are used to represent pronunciation.

People magazine interviewed family law lawyer David Glass about the name. He said that while the name is not technically illegal, it is likely not acceptable to the California government, and that if Musk and Grimes try to submit a birth certificate with the name “X-A-12” written on it, it is likely to be rejected.

Of course, there are more questions about the name, especially its practical meaning, which Grimes has previously explained. However, it now appears that the child’s birth certificate may be marked with a name other than “X-A-12”.

Musk may not be able to name his child X-A-12, according to California's birth registration manual.