Your customer number is entered automatically. Make sure that all other fields are empty like it is shown in the screenshot above. Then, click on the enter icon to begin the search and find your newly created contact person
On the Sales Area Data screen, select the Partner Functions tab. The following screen will appear..
In the next empty row, enter CP for PF (partner function). Click on the Number field and then on the search icon , which will bring up the following search window.
CP