Tax code AA does not exist for the Jurisdiction code

Dear Friends,

For Billing Document 1001, i a getting the error "Tax code AA does not exist for the Jurisdiction code"

Previously Billing Document 1000, does not have this error, Tax code and Jurisdiction code has not picked up in accounting document, so there was no error.

All are settings are perfect in production system, Why the tax code is picked up now?

Please suggest

Regards

Sridhar