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Zero value cost price or sale price

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Posted on by WS-20050028-0

Hi, how do I enter a 100% discount in a sales line? It will not allow me to have a $0.00 Line Amount value, it says / A value for this field is required/. Obviously I am missing a setting somewhere? Thanks.

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Dynamics 365 Business Central

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Yi Yong 2,748 Super User 2026 Season 1 on at

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Hello,

Typically we will use the Line Discount or Invoice Discount.

Standard BC do allows posting of $0 invoice if you are using $0 on unit price.

The error message doesn't look like it is coming from standard BC. You can check where the error is coming from the view last known error page.

https://robertostefanettinavblog.com/2021/01/29/business-central-view-the-last-know-error-page/
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Jun Wang 8,220 Moderator on at

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100% discount is a standard feature of BC, please check if you have exposed the field via personalization. The line discount % will auto become 100 if you put zero in the unit price field.

Jun Wang
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Valentin Castravet 32,800 Super User 2026 Season 2 on at

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First, modify the unit price field rather than the line amount field. Line amount is usually calculated by the system and should not be edited by a user.

Second, are you referring to the red asterisk in the line amount field? And this asterisk says a value for this field is required? If so, you can still post the sales order even with this red asterisk. You can basically ignore it.

Third, to have a zero price you can either enter 0 in the unit price field, or leave the unit price as it is and enter a discount of 100%. Either option works.

Valentin Castravet
Work: Zander ERP Services
Blog: Dynamics 365 Business Central Insights
LinkedIn: www.linkedin.com/in/valentin-c-0500a247/