Power Platform Community Forum Thread Details

I have a Start Date and End Date datacard in Powerapps newform. I have set the datacard required field to true. The validation works fine without any issues. When i try to submit the form, it throws error saying field is required.

I added one more validation on the date field on the DataCard error message. The validation works fine and shows error message, however i can bypass the error message and submit. May i know why?

DataCard Error Text property

If(
    !IsBlank(Parent.Error),
    "End Date is required",
    DateDiff(
        DataCardValue54.SelectedDate,
        DataCardValue55.SelectedDate,
        TimeUnit.Days
    ) > 30,
    "The End Date field cannot be less than 30 days from StartDate",
    ""
)

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General topics

Hi,

What you're seeing is by design. In Power Apps Edit forms, only two things actually block SubmitForm:

A Required field is empty (this is why your “End Date is required” works).
The form's Valid property is false — which is the aggregate of every DataCard's Valid property.

The DataCard's ErrorMessage / Error text property is display-only — it just shows red text under the card. It does not affect Valid, so SubmitForm happily submits anyway. That's why your 30-day rule is “bypassable”.

Fix — make the DataCard's `Valid` property reflect your rule

On the End Date DataCard, set the Valid property to something like:

!IsBlank(DataCardValue55.SelectedDate) &&
DateDiff(DataCardValue54.SelectedDate, DataCardValue55.SelectedDate, TimeUnit.Days) <= 30

Now the card is only Valid when End Date is filled and within 30 days of Start Date. Because the form's overall Valid is the AND of all DataCards, SubmitForm will refuse to run until the rule is met.

Keep your friendly error message

Leave your existing ErrorMessage formula (or simplify it) so the user sees why it's blocked:

If(
    IsBlank(DataCardValue55.SelectedDate),
    "End Date is required",
    DateDiff(DataCardValue54.SelectedDate, DataCardValue55.SelectedDate, TimeUnit.Days) > 30,
    "The End Date cannot be more than 30 days from Start Date",
    ""
)

Belt-and-suspenders on the Submit button

Per Microsoft Learn, the recommended pattern is to guard the submit button itself:

DisplayMode → If(SubmitFormName.Valid, DisplayMode.Edit, DisplayMode.Disabled)
OnSelect → If(SubmitFormName.Valid, SubmitForm(SubmitFormName))

This prevents the user from even clicking submit while any DataCard is invalid.

📚 Reference: Edit form and Display form controls in Power Apps — SubmitForm & Valid (Microsoft Learn)

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Raghav Mishra — LinkedIn | PowerAI Labs