Automatic Entry of Address Type 
Use
If you specify a recipient in the R/3 System, you normally have to assign the recipient type as well. This assignment can be entered automatically.
Procedure
.The system searches for the recipient name.
Result
The recipient type is entered by the system in the field Recipient type.

However, note that the search for the recipient type is terminated as soon as one or more recipients are found within a recipient type. The search is performed in the following order:
If you have created a recipient list with the name Becker, for example, and this name also appears under the user names or the address names, the distribution list will not be found and, consequently, the recipient type Distribution list not listed. In this case, you have to specify the recipient type yourself.