You want to enter an invoice which includes a tax amount only in GP.
Microsoft Dynamics GP
- Enable AvaTax integration for Receivables Transaction Entry and Tax Amount Adjustment functionality via Receivables Transaction in the Avalara configuration in GP
- Microsoft Dynamics GP > Tools > Setup > System > Avalara AvaTax > Configuration
- Go to the Tax Calculation settings.
- Create the tax only credit or debit using Receivables Transaction Entry
- Enter customer > click Additional > AVA RM override > fill in values