Error - Purchase Invoice Posting

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Posted on by Dharmesh

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Dear Experts,

I am facing an issue while posting a Purchase Invoice. I have noticed that this error appears only sometimes. On certain occasions, it stops me from posting the Purchase Invoice, and at other times, it does not appear and the posting goes through successfully.

I tested this in two different projects. In the first project, the system did not allow posting and showed the error. After a few days, I tried again, and at that time the error did not appear, and the posting was successful. The same situation occurred in the second project. In the Production environment, I have been unable to post the Purchase Invoice for the last 15 days because the error consistently appears. However, in the Sandbox for the same project, the error appeared initially, but after two days, it stopped showing and the posting was allowed.

If anyone has a solution or guidance for this issue, I kindly request your support.

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Dynamics 365 Business Central

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OussamaSabbouh 2,514 on at

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Error - Purchase Invoice Posting

Hello,

This error simply means one of the system-generated posting lines ended up with the wrong sign, usually because of rounding, discounts, item charges, or custom extensions. That’s why it appears only sometimes, it depends on the specific invoice values.

The posting routine creates hidden Gen. Journal Lines.

If one of them should be negative but becomes positive, BC blocks posting and shows this message.

It happens with: rounding, currencies, discounts, negative lines, or extensions modifying posting.

Sandbox vs Production differences come from setups or extensions behaving differently.

Check the below:

Remove invoice discounts and test again.

Remove item charges.

Try posting without VAT.

Check currency rounding precision.

Temporarily disable custom extensions.

One of these usually reveals the cause.

Regards,
Oussama Sabbouh

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