Determining Paint Code

I am needing some touch up paint for a 2002 PA. I have checked some listings and believe the color is "white diamond pearl coat." There are 2 separate codes listed for this color. One paint code is "98" and the other is "wa800J". Not sure what the difference is. They could be the same color, but different types of paint.

I have looked under the hood for a paint color tab. Can't seem to locate it though. I also checked the door. Does anyone know where Buick indicates the specific paint color? Thanks.

Check under the spare tire cover.

Thanks. I looked under the spare tire cover, but could not find a paint code. There is a label with numbers, but it does not say anything about paint.

It will not say paint, it is the last number, usually bottom l/s of label, 2 digits.

Thanks! Just found it. It has both numbers, U98 and U800J. Apparently, they are the same paint and could also be listed as WA98 or WA800J. Just ordered it along with some primer and base.