Solution : https://service.sap.com/sap/support/notes/385753 (SAP Service marketplace login required)
Key words :
existing customer-specific set types, additional key words commpr01, program saplzom_<settype_id>_ui, set type individually, respective set type, business object key, function module com_settype_transform_single, function module requires, lzom_<settype_id>_uif02, product maintenance withthe
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