You want to upgrade to DW4CORE 200 SP03, after you select SAP BW/4HANA 2.0 SP03, MP will automatically add DW4CORE 200 SP04 as target.
Please see screenshots below.
SAP BW/4HANA 2.0
SAPK-20003INDW4CORE, SAPK-20004INDW4CORE, DW4CORE 200 SP03, DW4CORE 200 SP04, MP, Maintenance Planner, SAP BW/4HANA 2.0 SP03 , KBA , BC-UPG-MP , Maintenance Planning Tools , Problem
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