Required fields validation not working for multiselect choice column with checkbox

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Posted on by Poweruser32490

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I have a multiselect choice column in SharePoint which is shown as checkbox via Gallery. This multiselect choice column is set as Required in PowerApps NewForm.

Despite filling the checkbox with correct choices, it still throws validation error stating Type is required. May i know why?

Gallery Items

Choices([@'DataSource'].'Type')

Checkbox OnCheck

Collect(ColTypeofInfo,ThisItem.Value)

Checkbox OnUncheck

Remove(
    ColTypeofInfo,
    LookUp(
        ColTypeofInfo,
        Value = ThisItem.Value
    )
)

DataCard Required

true

DataCard Update

ColTypeofInfo

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Valantis 5,267 on at

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Hi @Poweruser32490,

The required validation fires because the form's built-in validation checks the DataCard's internal state, not your ColTypeofInfo collection. Since you're using a custom collection to manage selections, the form has no way to know the collection has items.

Fix: set the DataCard Required property to false and handle validation manually.

On your Submit button:

If(
IsEmpty(ColTypeofInfo),
Set(varSubmitAttempted, true),
SubmitForm(Form1)
)

Add an error label below the gallery with:

Visible = And(varSubmitAttempted, IsEmpty(ColTypeofInfo))
Text = "Type is required"

This blocks submission and shows the error only when the collection is empty and the user has tried to submit.

Also check that ColTypeofInfo stores records with a Value property matching the choice text exactly. The Collect(ColTypeofInfo, ThisItem.Value) stores plain text strings, but the SharePoint multiselect choice column expects a table of records with a Value column. If they don't match, the data won't save even if validation passes.

Best regards,

Valantis

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Kalathiya 2,139 Super User 2026 Season 1 on at

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Hello @Poweruser32490

Additionally, in the above reply, since you are passing the ColTypeofInfo collection directly, the Form is not recognizing it as the required default control. I have tried a similar approach earlier.

If we pass the collection name in the Update property, the required validation does not work. However, if we pass the default ComboBox control in the Update property, the validation works correctly and shows the required field error.

So basically, you need to keep the default ComboBox control and set the code in its DefaultSelectedItems property as shown below and just hide the control. Then use this ComboBox control name in the Update property and try it.

Approach 1:

Default Selected Item - Combox Property:

Filter(Choices([@'DataSource'].'Type'),Value in ColTypeofInfo.Value)

Update Property

YourCombobxControlName.SelectedItems

Approach 2:

Here, if no value is selected in the collection, it will trigger the validation notification instead of submitting the form.

Submit button on select code:

If(IsEmpty(ColTypeofInfo), Notify("Type is required!",NotificationType.Error,2000), SubmiForm(YourFormControlName) );

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Vish WR 3,236 on at

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@Poweruser32490

The issue is that Power Apps' built-in required validation doesn't know about your custom ColTypeofInfo collection — it only checks the form's internal state, so it keeps throwing the error even when selections are made.

Both replies correctly identify this and suggest the same two fixes:

Option 1 : Keep a hidden ComboBox, set its DefaultSelectedItems to filter from ColTypeofInfo, and use it in the DataCard Update property so the form's validation works natively.

Option 2 : Set Required to false on the DataCard and manually block submission using IsEmpty(ColTypeofInfo) on the Submit button with a Notify or error label.

Both are valid approaches. Option 1 is cleaner if you want native form validation to work. Option 2 is simpler to implement quickly.

Vishnu WR

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Please ✅ Does this answer your question if my post helped you solve your issue. This will help others find it more readily. It also closes the item. If the content was useful in other ways, please consider answering Yes to Was this reply helpful? or give it a Like ♥

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