Customer is not able to post the intercompany Purchase order invoice with the three-way matching policy active due to difference of Tax calculation over the two companies.

It happened to be having an Intercompany trade between two different countries that each one has its own tax calculations.

for example:

Country A: have tax 15%

Country B: have tax for 13%

Creating an Intercompany trade between the aforementioned two countries with cause an error for the Invoice posting, while activating the three-way matching.