PA0006 - ORT01 PSTLZ - DBAN124 DEUEV Validation when ORT01 is Empty

Hi out thee,

i implemented in ZXPADU02 PAI USerexit PBAS0001 a piece of code to give a table with different cities depending on user entry of postal code. Like a value help on postal code...but just for hitting enter key. After choosing a city it is will give value to field ort01

If the user hits enter when the field ORT01 is EMPTY - for example initial creation of it6 - there is an error because "WOHNORT IST NICHT DEÜV GERECHT" DBAN124.

So, my enter event on postal code does not work.

Any idea to avoid the validation of ort01 before my exit is called?