This should be filled out in any case, if possible :
W for western or O for eastern Germany Old Zip - Code ( >6000< Frankfurt 1 (Westend) )
City ( 6000 >Frankfurt< 1(Westend) )
Is included in the address a "Postfach"? (like >Postfach 55 33 12<) Then leave the Street alone and jump to the field labeled "Postfach" If the "Postfach" field is filled, the Street is not evaluated and the resulting Postleitzahl is in the very most cases not the same as the Postleitzahl for the Street-address !
Street ( >Robert-Mayer-Strasse< 11)
No. ( Robert-Mayer-Strasse >11< )
Postfach ( Postfach >11 19 32< )
"Zustellpostamt"
This is the Number of the Postoffice which gets the Mail and carry it to the addressee.
( 6000 Frankfurt >1< (Westend) )
Ortsteil
A own name for the part of town the addressee lives in.
( 6000 Frankfurt 1 (>Westend<) )