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Avalara Help Center

Why is my customer taxing after I made them exempt in the admin console?

Issue Overview
Trying to apply a tax exempt cert and cannot get the "Applied) box to check so the tax is not applied to an invoice
Avalara Avatax
Please be sure that the customer code coming from your ERP is the same verbatim as the one mapped to your exemption certificate in ECMS. 

Note: Even so much as an extra space will make the transaction start charging tax.