Solution : https://service.sap.com/sap/support/notes/431831 (SAP Service marketplace login required)
Key words :
prerequisites sap delivers predefined set types, function module zom_<settype_id>_ui_init, entry additional key words comm_attrset, development class/package $tmp, current abap program saplcom_product_detail_ui_2, transportable development class/package, customer-specific set types, 'attributes/set types -> transport', transportable development class, set type <settype_id>
Related Notes :
| 872533 | FAQ: Middleware |
| 418886 | Download: Products not found or not changeable |