BDoc error: Tax classification XX AAAA 0 does not exist

Hello Experts,

We have a - BDoc error: Tax classification XX AAAA 0 does not exist in SAP CRM system.  (the error is for business partner)

We have run the initial load of DNL_CUST_TAX and re-process the BDOC, but still we have the BDOC error.

Please help how we can resolve the BDOC error.

Thanks and Regards

DJ