You must create required spend categories.

Spend categories group similar types of purchasable items and can carry default attributes that are inherited by purchase items assigned to that category, which in turn populate onto requisition and purchase order lines when those items are selected. The Official Workday Pro Procure-to-Pay Guide identifies Unit of Measure as an attribute that can be defaulted at the spend category level, ensuring consistency in how quantities are expressed for items within that category and reducing data entry errors on transactions. Option A is incorrect because Tax Applicability is defaulted at the purchase item level, not derived from the spend category. Option C is incorrect because Item Identifiers, such as item numbers or descriptions, are specific to individual purchase items and are not category-level defaults. Option D is incorrect because Supplier is determined through sourcing or contract assignment for a specific requisition or PO line, and is not an attribute that defaults from a spend category, which is a classification dimension rather than a sourcing mechanism.