Hi
There is no std document that is available for migration from TAXINJ to TAXINN.
It is equivalent to doing a new implementation, as you need to close all the documents,
and then change the tax procedure to TAXINN.
In OBBG you can assign the tax procedure for country as IN. So if you assign
TAXINN here against IN then TAXINJ will not be picked any more.
Regards,
Rajasree R