THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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Separating collected and due taxes is mandatory and done in OFBiz though no VAT specific accounts exist.
See point 7See "Purchase order VAT" section below. We need at least an incoming tax (sales) GLAccount and an outgoing tax (purchase) GLAccount. Here is an interesting comment by Enrique Ruibal A.
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