This section outlines the limitations and considerations for calculating tax on charge invoice item adjustments.

The limitations on calculating tax for charge invoice item adjustments are as follows:

• After this feature is enabled, Avalara controls all tax calculations and Zuora does not adjust tax line items. If you want to adjust tax line items in Zuora, disable this feature by setting Use Avalara to calculate taxes for invoice item adjustments to No in Billing Rules, create invoice item adjustments to adjust tax line items, and then enable this feature again.

• When creating charge invoice item adjustments in a batch call, Zuora recommends you have up to five charge invoice item adjustments. A timeout error can occur if the communication between Zuora and Avalara takes more than two minutes.

• When you use the SOAP API to create charge invoice item adjustments, Zuora does not support using the useSingleTransaction field on the CallOption object.