Data Samples and Guidelines for Using the PGA Message Set for Electronic Completion of the U.S. Department of Agriculture (USDA), Food Safety Inspection Service (FSIS) Application for Import Inspection (FSIS Form 9540-1)
Comments for this guide can be submitted via regulations.gov until June 27, 2013
http://www.fsis.usda.gov/PDF/Data_Samples_Guidelines_PGA_Message_Set.pdf