The above error occurs if you have a tax code issue when updating a batch of invoices. Our experience is that the invoice(s) is not given. If you find and correct the invoice, and try again to post, you get the same error. The workaround is to use DFDM to change the value of field 45 – Invalid Tax Calc$ to N.
This issue became apparent in 4.20 but has been marked Not a Bug and been closed. The customer experience would be far better if, on the later attempts to Post, the program re-evaluated the tax situation and adjusted the Invalid Tax Calc flag appropriately.

by: John B. | over a year ago | Sales & Distribution