The print of the tax ID in sales quotes/ sales orders is not supported; this is a known limitation. The newly introduced tax numbers in Accounts are not part of the output message for the sales quote/ sales order output form. The structure implies that the tax ID is supported however.
Workaround: create an extension field with the tax ID and include this extension field in the output message and print form.
KBA , SRD-FIN-INV , Inventory , Product Enhancement