What NAICS Code do we need for a GSA Schedule

GSA Schedule solicitations will tell you what NAICS codes they want your firm to specify.  NAICS codes a simply industry codes that describe what a firm's business is.  GSA will specify the appropriate NAICS for each Special Item Number in each GSA Schedule. Sometimes you may not agree with the NAICS code, but a GSA contractor must abide by GSA's decision.  to do so, you simply need to add the NAICS code to your SAM (sam.gov) registration.  

NOTE:  SAM is the system that replaced CCR and ORCA in 2012.

A table cross referencing NAICS Codes with all GSA Schedule can be found here: NAICS Codes