Solution : https://service.sap.com/sap/support/notes/852346 (SAP Service marketplace login required)
Key words :
specification managementyou select, start transaction se37, i_estcat type spec, tcg11-estcat optional, i_atfor type spec, cabn-atfor optional, terms ehs32sp10psehs2004sp09ps reason, c107vat_ctms_char_value_f4 function module, function module, symptom component
Related Notes :
| 837849 | No message if text not found |
| 833068 | Numeric characteristic values are not displayed |
| 824600 | Application is exited after an error message |
| 793009 | Chars w/ fixed values: No data transfer if duplicate entry |
| 784044 | Incomprehensive error message when you use F4 help |
| 777956 | Fixed values cannot be deselected via F4 help |
| 773138 | F4 help with multiple values nichtverphraste characteristics |