GST- Purchase order- No taxes information

hello

In PO>Tools>India tax details , Org and location is grayed without showing information.  Tax category can be chosen but  on click proceed no information is coming. We are on 12.1.1.  The following setup is also in place.

1. A. Ensure you have enabled Singapore in Country Specific Localization. This will bring license for India Localization.
2. 1. Go to SYSADMIN responsibility / Oracle Application manager / License Manager / Country Specific Localization
3. 2. Select Singapore. Save changes

1. B. Ensure "JAI_EXISTENCE_OF_TABLES" of table is set. Use the below query to check:

Execute the below script in apps schema using SQL*PLUS

[set serveroutput on;