framemaker to pdf question

[Rebecca.L.Frasure at aphis.usda.gov]

Framemaker 8.0 Win XP

My coworker is having trouble creating a pdf from Framemaker: 

"I received a new error message today when distilling the TM from Frame to 
pdf.
After trying multiple ways to pdf (save to, print to), I finally saved to 
postscript.
The error message I received in the log said this:
"This document does not meet PDF/A-1b:2005 compliance check. No pdf was 
created."

Could anyone tell us what that mean?

Thanks in advance, 

Rebecca Frasure
Editorial Assistant
PPQ Manuals Unit
Phone: 240-529-0353
Fax: 240-529-0399