1.  IT is a special-purpose domain for listing the tobacco ingredients (only) for a tobacco product. Non-tobacco ingredients (e.g., wrapping paper, filter) would not be represented in this domain (see Section 2.8.8.5, Non-Tobacco Ingredients, for specification, assumptions, and other information on non-tobacco ingredients).
  2. IT is 1 of 2 domains (along with IN) that serve as the origin of the consistent identifier variable IGDCMPID (Ingredient or Component Identifier).
    1. IGDCMPID must represent a unique tobacco ingredient with regard to the attributes listed in assumptions 3a-3c. If 2 or more sources of the same variety of tobacco ingredient differ on any of these attributes, they must each be assigned a different value for IDGCMPID (e.g., Burley Tobacco 1, Burley Tobacco 2)
    2. IGDCMPID is also used in the Ingredient Quantities by Component (IQ) domain (see Section 2.8.8.6), where the ingredients identified by those values are quantified by component. When quantifying ingredients in IQ, every ingredient (every value of IGDCMPID in IT) must be accounted for in IQ.
  3. IT additionally contains variables for representing the following attributes of each tobacco ingredient:
    1. Tobacco product master file, if applicable
    2. Specification or variety of the tobacco
    3. Complexity of the ingredient, to differentiate between single tobacco ingredients and complex ingredients (tobacco blends), and a separate indicator as to whether a complex tobacco ingredient was made to specifications
    4. Tobacco cure method
  4. At least 1 record representing the overall tobacco component/tobacco filler for the product must be included in the dataset. The individual tobacco ingredients of which the overall tobacco filler/component of the tobacco product is comprised must also be represented, if available. This will be necessary when quantifying the ingredients in the IQ domain.