Solution : https://service.sap.com/sap/support/notes/883594 (SAP Service marketplace login required)
Key words :
relevant support packages, required field check, required fields, article master, suppress_req_fields_upd method, badi_mat_f_spec_sel badi, retail-specific, terms mm41, mm42 reason, program error
Related Notes :
| 746875 | BADI_MAT_F_SPEC_SEL: Method for the field selection control |