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Answer: select Recorder or Documents fields:
-Go to Taxes module, open list of VAT Rates and select the problem one, for example, 5%:
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-Make sure that selected type of rate is logically correct, means that not possible that 5% rate might be Out-Of-Scope or Export, so, that boxes should not be enable, example of incorrectness:
Double-click on the quantity value of the needed item. A detailed dialog window will open, where you need to select the parameter "Recorder".
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