What is Schufa Identification number pattern?

Any legal document looks as it does, and has the correct number of digits for that document.

Of course they have security, but they don't publish it in order to avoid people trying to get away with fake identities.

There is absolutely no legal reason for you to want what you're asking for.

That's absurd, Fred. I create voice conversational bots to provide customer service with transactions. I can't control what a person speaks into the bot and I want to make sure that if they communicate a Schufa ID, it doesn't get logged along with the rest of their transcript. So knowing the format of a Schufa ID without actually knowing Schufa IDs is important.

A professional would research properly in order to ensure accurate information, not ask on a forum.

This looks a lot more like someone trying to create a fake ID for scam loans or some other criminal activity , but I suppose the OP just could be a really bad researcher.

As for research, I got an example in about 30 seconds using my phone.

If it is a pro with legitimate reasons, you might want to use the adjective 'lazy' in a sentence that includes 'incompetent'.

In addition to what Fred wrote above, the topic has nothing to do with expatriation in Germany.

I will thus close the thread.