Solution : https://service.sap.com/sap/support/notes/448962 (SAP Service marketplace login required)
Key words :
general settings -> set countries -> set country-specific checks, postal code required entry field, additional key words bas_checksbas_businesspartner, required entry field check, screen attribute screen-required, automatically establish additional fields, required entry field, required entry fields, field selection control, sap regional structure
Related Notes :
| 153264 | Postal code field as a required entry field |