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Insert Action not appearing with ListPart

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Posted on by Seth_Abady

Hello,

I'm displaying data from two temporary tables similar to Routing Header / Line. The page is displayed in response to an action added to the Items page. Data is retrieved from a REST API.

I've been unable to make the Insert Line (Manage) group appear.

The problem appears related to SubPageLink which makes me wonder if the temporary table scenario I'm implementing is supported. For example, when I specify a the following sub-page link, the ListPart grid is not populated.

SubPageLink = ComponentId = field("ComponentId")

Any suggestions appreciated.

Update: I mentioned the SubPageLink wasn't populating the grid. After adding CurrPage.Update() to the page containing the ListPart in the after populating the temporary tables resulted in the ListPart populating as expected.

Still unable to show the Insert Line action.

Thanks!

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Dhiren Nagar 2,898 Super User 2026 Season 1 on at

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Hi,

For the part page can you please try InsertAllowed = true and ModifyAllowed = true properties?

Regards,

Dhiren.

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Seth_Abady 55 on at

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I think I've resolved, or at least found a solution. The grid was configured with ShowAsTree = true. That was intentional. Apparently, when that value is true, the insert functionality is not available (though I don't see it explicitly spelled out in the documentation for IndentationControl).

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Aman Kakkar 3,101 Super User 2026 Season 1 on at

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Hi,

But why would you actually need "Insert" action while using Temporary Table?

Although, you can use the InsertAllowed property on the subpart page to hide or show the Insert action.

Hope this helps.

Aman K

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Seth_Abady 55 on at

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@Aman Kakkar the initial data is retrieved from a REST API and possibly modified within the BC page, at which point it would be sent back to the source via an API call. The originating data is not native to BC hence the use of a temporary table.

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YUN ZHU 99,440 Super User 2026 Season 1 on at

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Hi, hope the following can give you some hints.

Dynamics 365 Business Central: How to add “actions (buttons)” on Request Page of Report/XMLport

https://yzhums.com/21114/

Thanks.

ZHU

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OussamaSabbouh 13,540 Super User 2026 Season 1 on at

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Hello,

Your temporary header/line design is supported, but the reason Insert Line / New doesn’t appear is that Business Central only shows it when the ListPart is truly insertable. In practice, this means the line page must explicitly allow inserts (InsertAllowed = true), be editable, and be able to generate required keys (typically a Line No. via AutoSplitKey = true or logic in OnNewRecord). SubPageLink itself is fine for temporary tables (your CurrPage.Update() fix confirms that), but if BC can’t safely create a new record for the subpage, it hides the system Insert action. In short: make sure the ListPart page is editable, allows inserts, and initializes keys for new temporary records—otherwise the Insert Line action will never show.

Regards,
Oussama Sabbouh

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