You want to create new Expense Categories to be assigned to Expense Types (either standard ones or custom ones, that you've created).
SAP Business ByDesign
Creation of new Expense Categories is not available in SAP Business ByDesign.
New Expense Types can be created instead.
In case you'd like to have the functionality implemented in SAP Business ByDesign, we suggest you to create an idea in the Continuous Influence Session for ByDesign.
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