Hi Sweta,
I could not understand your requirement properly. Sorry for that.
What i understood is, there are two different partner functions, one is emp responsible and other one is zpartner function. The responsible service org unit is determined automatically based on the employee responsible. The zpartner function has to be maintained manually. I understood till here.
Now, after entering zpartner function manually, what do you want to determine?
Do you want to redetermine the sales org unit after manually entering the zpartner function in transaction? Dont you want the service org unit in transaction after the zpartner function maintained?
Please let us know. Please confirm and correct my understanding.
Regards,
Maddy