SAP T-Code search on OKQ
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OKQ0 - Classification Data (Summarization)
OKQ1 - Classification Data for Obj. Records
OKQ2 - Define Reference Characteristics
OKQ3 - Define Reference Character. (Orders)
OKQ4 - Define Reference Chars (Projects)
OKQ5 - Maintain Hierarchy Struct. (General)
OKQ6 - Maintain Characteristic Structure
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