anchor.diff:  Award or IDV Type,contractactiontype
   Multiple or Single Award IDV,multipleorsingleawardidc
   Type of Contract,Pricing.Mechanism.Code
  +Pricing.Mechanism.Code,Pricing_Mechanism_Code
   Action Obligation,Action.Obligation
   contractingofficeagencyid,Contracting.Agency.ID
   Index,Index
  
positive.code: PIID,PIID
  Referenced IDV PIID,Referenced_IDV_PIID
  Vendor DUNS,Vendor_DUNS
  Action Obligation,Action_Obligation
  Contracting Department Name,Contracting_Department_Name
  Contracting Agency Name,Contracting_Agency_Name
  Funding Department ID,Funding_Department_ID
  
negative.code: Product Or Service Code,PSC_Code
  PSC Description,PSC_Description
  Product or Service Description,PSC_Description
  Contracting.Agency.ID,Contracting_Agency_ID
  Contracting Department ID,Contracting_Department_ID
  Funding Agency ID,Funding_Agency_ID
  Place of Performance City,Place_of_Performance_City
  