Tax Not defaulting to AP Line

 Hi

I am trying to have the basic minimum functionality to default taxes  in AP. I am able to manually enter tax related lines after pressing 'Tax Details' button in AP. However tax is not defaulting automatically on Invoice. I have tried 'Calculate Tax' as well as 'Validation'
Here is what I have setup
1. Tax Regime : US
2. Tax Jurisdiction: California State
3. One Tax Code for California
4. One tax status
5. One tax rate code

I have setup my tax rules as follows:
1. Determine place of supply : Ship to (Default)
2. Determine Tax Applicability: Applicble (Default)
3. Determine Tax Registration: Ship to party
4. Determine Tax Status: Default to Tax Status defined by me