Solution : https://service.sap.com/sap/support/notes/386182 (SAP Service marketplace login required)
Key words :
additional key words sapmf02ksapmf02dpostal checkbas_settings, transaction-specific control, required entry field, required field control, postal code length, postal code field, required entry, postal code, field lnplz, general control
Related Notes :
368473 | Postal code field as mandatory field; Release 4.5 |
170183 | |
153264 | Postal code field as a required entry field |