You can set up default VAT business posting groups and default VAT product posting groups and have the program insert the VAT business or product posting group code along with the general business or product posting group code. If you decide not to do this, then you must assign codes to the relevant G/L accounts.
Open the Chart of Accounts window.
In the Gen. Posting Type field, click the AssistButton , and then select the appropriate option (Purchase or Sale).
In the VAT Bus. Posting Group field, click the AssistButton to see the VAT Business Posting Groups window. Select the line with the desired posting group, and then click OK to copy the code to the field.
In the VAT Prod. Posting Group field, click the AssistButton to see the VAT Product Posting Groups window. Select the line with the desired posting group, and then click OK to copy the code to the field.
Assigning VAT Business Posting Groups to Customer and Vendor Accounts
Assigning VAT Product Posting Groups to Item and Resource Accounts