Middleware Error: Tax Number Category Misisng

Hi Experts,

When I try to replicate a customer from ECC to CRM the Bdoc is failing. I get the following error.

Tax number category AU1 does not exist (Australia Tax Category)

I checked the table TFKTAXNUMTYPE and there is an entry for Category AU0.

My question is why is the BDOC picking AU1 rather than AU0. Where can I see this on the ECC or CRM side of things?

Please let me know at the earliest since this is a production issue.

Thanks in advance.

Regards,

Dhruv Kashyap