PCM Program - Which is it?

[vaaccess]

There's a sticker in my engine compartment that says, "PCM Program 3U7A12A650BKB" (BTW, the first A may be another number, the marker they were using left it sort of blobby.)

Anyway, just wondering which program that is. The label also said it was done 12/1/03 and my vehicle is a 2004 Mountaineer that was originally sold in Jan of 2004, so I'm guessing that PCM reprogram was done at the factory.

Thanks!