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System calculate GST for the code GST-0

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Posted on by Satya2277

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I have one condition that, i am importing saled order line data though configuration package and i put GST-0 in conf package. When i import the data on sales line in the business central then for the GST-0 system is calculating the GST. why this happen how can i solve this?

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Aziz Skhiri 413 on at

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Hello , The system automatically recalculates GST because the validation order in the configuration package is not respected (the Tax Engine prioritizes masters: customer/ship-to state, item, HSN/SAC before the GST Group Code). Quick solution: Import the dependent fields first (Document No., Location Code, Item No., etc.), and only afterwards the GST Group Code = "GST-0" (put it last in the processing order). Keep "Validate Field = Yes". Hope this helps you !

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YUN ZHU 99,322 Super User 2026 Season 1 on at

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Is Validate Field enabled?

I think I've seen this question on the forum before.
You can check the standard code; if this code is on a page instead of a table, using the Configuration Package won't work.

Thanks.

ZHU

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OussamaSabbouh 13,316 Super User 2026 Season 1 on at

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Hello,

This happens because when a Sales Line is inserted or validated, Business Central recalculates GST/VAT based on the tax setup (Customer, Item, Posting Setup), so the value imported from the configuration package (GST-0) can be overridden by the system if the setup requires tax. In short, the import writes the value but BC recalculates it during validation. The fix is to check the GST/VAT Posting Setup and related customer/item tax groups and ensure that the combination used allows 0% GST, otherwise BC will automatically apply GST even if GST-0 was imported.

Regards,
Oussama Sabbouh

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