Application of Withholding Taxes in expense reports

Hello.

We have suppliers (employees who are also suppliers) defined with automatic application of withholding taxes, and this works correctly in the case of invoices. However, these withholdings also apply to expense reports, something we want to avoid because expense reports must not have withholdings in any case.

We have reviewed the setup options but we do not see how to do this. Is there any way that the application works as we need?

Thank you in advance.