BAPI for updating tax code for purchase order..

Hi friends,

I have one requirement to change tax code for multiple Purchase order but the

thing is they should not go for release.So what should I prefer BDC or BAPI.

I am thinking to implement it through BAPI, but I don't know what procedure to follow.

If somebody can provide me a small guiding steps or code then it will be very helpful for me..

Thnaks in advance..

Useful answers will be rewarded with points....

Regards,

Rajesh Akarte