Standard BAPI to Update Partner Data

Dear All,

I was writing a report to update the Partner data using BAPI in CRM system.

The fields needs be updated are : (Authorization Group(BUT000-AUGRP), Last Name(BUT000-LASTNAME), City(ADRC-CITY1), Telephone Number(ADR2-TELENUMBER) & Email Address(ADR6-SMPT_ADDR)).

I was tried ""BAPI_BUPA_ADDRESS_CHANGE"" and ""BUPA_CENTRAL_CHANGE"". few fields are not updating with these two BAPIs.

Kindly requesting you to Please suggest me a BAPI which suites for my criteria and what are the mandatory fields needs to pass to update that data.

And we have a GO-LIVE and nothing will work if it is not completed, Please suggest me the right solution as well.

Thanks in advance.

Regards,

Yohan Kanna