A catalog number is an identification number assigned to a purchasable product by an organization which sells goods.
It is similar to the concept of a
stock keeping unit
In inventory management, a stock keeping unit (abbreviated as SKU and pronounced or ) is the unit of measure in which the stocks of a material are managed. Or to put it another way; is a distinct type of item for sale, purchased, or tracked in ...
It is sometimes overlapping but typically distinct from the concept of a
part number.
References
Identifiers
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