Tax rate created with incorrect data set tax lookup and cannot be used in Payables

Summary:

Hello!

There are 5 BU from Argentina already implemented using TCC to derive taxes on Payables invoices working as exepcted in PROD. We are now implementing 2 new BU from Uruguay on the same environment.

We created a new tax regime REG IVA UY, tax IVA CF, tax rate IVA CF 22, tax applicability rules, tax rate rules to be used in Payables. When we created the first invoice, the tax rate was not calculated automatically. We tried to manually create the tax line and noticed the tax rate was not displayed in the lov.

Then we noticed the tax rate code assignmetn was created under an incorrect data set. We checked 'Manage Business Unit Set Assignment' setup task and discovered that the data set was not previously changed for Tax Classification Code task. It was set for Argentina (there are previous taxes using this value), instead of the new country we are implementing that is Uruguay.