Pin Number

Received a new fob and now app on iPhone won't work. Following the instructions I get to a point where it ask for my "pin number" a six digit number. I don't remember making up a pin or ever hearing of a pin number........any ideas where I can find out what it is or by pass needing it? Thanks in advance.

 

I'm 80 years old and try really hard to record all passwords, pin numbers etc and even record them on a file on my lap top..........this one didn't get recorded. BUT I did start a file on my iPhone "notes" where I take a photo of the VIN, license plates etc just in case. Just remembered that I started the note so checked it out. Found I recorded an Apple PIN code which turns out to be six digits........Hopefully problem solved. Thanks for the reply it jogged my old mind.