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VAT calculation type error

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Posted on by CU13010319-0

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When trying to post a purchase invoice, I get an error attached "VAT calculation type must be equal to sales tax in general journal line: journal template name=, journal batch name=, line no=0. Current value is normal tax. I changed the setting in the tax posting setup for the field VAT calculation type from normal tax to sales tax. And the tax category field I also added the letter E. If I delete the existing purchase invoice or purchase order and then recreate new, I am able to post. But with an old document, even after changing the tax posting setup, I still get that posting error. Any way to solve this without having to delete all the old purchase documents and be able to post? Is there a toggle somewhere on the purchase document or elsewhere that I can adjust?

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Khushbu Rajvi. 16,784 Super User 2025 Season 1 on at

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VAT calculation type error

Unable to see your attachments. Hope this helps:https://community.dynamics.com/forums/thread/details/?threadid=cd244cf4-22f6-48e7-8f0a-7fdead4d5d10
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Jainam M. Kothari 7,938 on at

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VAT calculation type error

May this can help : https://learn.microsoft.com/en-gb/dynamics365/business-central/finance-work-with-vat

https://learn.microsoft.com/en-us/dynamics365/business-central/finance-setup-vat
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Ramesh Kumar 4,514 on at

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VAT calculation type error

Yes — what you're running into is a common issue in Business Central where changing the VAT Calculation Type in the Tax Posting Setup doesn't retroactively update existing documents (e.g., Purchase Orders or Invoices). This is by design: once a document is created, key tax values are cached at the line level and won't reflect updated setup unless the document is refreshed.

Also please remember once invoice is posted is not possible to update without custom code.

Thanks

Ramesh

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YUN ZHU 83,307 Super User 2025 Season 1 on at

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VAT calculation type error

Hi, you can try to modify the value on the Purchase Invoice directly using the following method.

Dynamics 365 Business Central: Can we skip/ignore field validation errors?

https://yzhums.com/44435/

Hope this helps.

Thanks.

ZHU