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check for duplicate from previous entries and pop up window if there is duplicate entries.

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Posted on by exploringG

Dear Power Appers,

I have my first App ready and some users have already tried to play with it. Then I ran into a problem with duplicated entries from same user.

The user did not realize that he already entered the same information before. For example, the user is supposed to input their travel expenses for each month. One of them entered and saved his expenses in July twice.

I want to build a 'check' function when user press submit button. To check whether the current user has already saved data based on the Year and month. In the app, user is supposed to type in their email address, year, month and expense. If same year and month for the same user already exist, then a pop-up window will show and state " Entry already exists. ".

I already knew how to set up the pop-up message. By setting the OnSelect property for 'Submit Button' with

 Notify("Entry already exists."), SubmitForm(EditForm1))

How can I realize this 'check' function?

Best regards,

exploringG

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ANB

7,252 Super User 2026 Season 1 on at

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Hi @exploringG ,

Hope you are doing well.

If I understand your question correctly, then please try this formula on submit button:

If(CountRows(Filter(DataSource, User= CurrentUser And Year = YearSelectedByUser And Month= MonthSelectedByUser))>0, Notify("Entry already exists."),
CountRows(Filter(DataSource, User= CurrentUser And Year = YearSelectedByUser And Month= MonthSelectedByUser)) =0, SubmitForm(EditForm1))

I hope this helps.

Please click Accept as solution 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 giving it Thumbs.

Thanks,

ANB

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exploringG 82 on at

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Hi @ANB ,

First of all, thank you for your solution. I realized that I already have an 'if' formular inside of my submit button. It's calculating the total of all datacard values.
If(Sum(Value(DataCardValue11.Text), Value(DataCardValue12.Text))<>1, Notify("Summation of percentage must be 100%"),SubmitForm(EditForm1))
Can I put your formula inside the 'If' function as well? I have a delegation warning and also
The 'CountRows' operation is not supported by this connector.
This is how I arrange my formula for the submit button.
If(Sum(Value(DataCardValue11.Text), Value(DataCardValue12.Text),Value(DataCardValue13.Text))<>1, Notify("Summation of percentage must be 100%"), CountRows(Filter(ProjectResourceExcel, User= CurrentUser And Year = DataCardValue9.Text And Month= Dropdown3.SelectedText))>0, Notify("Entry already exists."),CountRows(Filter(ProjectResourceExcel, User= CurrentUser And Year = DataCardValue9.Text And Month= Dropdown3.SelectedText)) =0,SubmitForm(EditForm1))
The 'Month' entry in my App is a drop-down list from 1-12.

When I run the App, there is no Error message popping out if I enter duplicate data and also the EditForm does not get to be saved at all.

Best,
exploringG

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ANB 7,252 Super User 2026 Season 1 on at

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Hi @exploringG ,

You need to use the formula in this way:
If(Sum(Value(DataCardValue11.Text), Value(DataCardValue12.Text),Value(DataCardValue13.Text))<>1, Notify("Summation of percentage must be 100%")); If(CountRows(Filter(ProjectResourceExcel, User= CurrentUser And Year = DataCardValue9.Text And Month= Dropdown3.SelectedText))>0, Notify("Entry already exists."),CountRows(Filter(ProjectResourceExcel, User= CurrentUser And Year = DataCardValue9.Text And Month= Dropdown3.SelectedText)) =0,SubmitForm(EditForm1))

For Month, use dropdown.Selected.Value

I hope this helps.
Please click Accept as solution 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 giving it Thumbs.
Thanks,
ANB

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exploringG 82 on at

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Hi @ANB ,

I'm still having delegation warning and the EditForm could not be submitted or saved.
This is the full code.
If(Sum(Value(DataCardValue11.Text), Value(DataCardValue12.Text),Value(DataCardValue13.Text),Value(DataCardValue14.Text),Value(DataCardValue15.Text),Value(DataCardValue16.Text),Value(DataCardValue18.Text),Value(DataCardValue19.Text),Value(DataCardValue20.Text),Value(DataCardValue21.Text),Value(DataCardValue22.Text),Value(DataCardValue23.Text),Value(DataCardValue24.Text),Value(DataCardValue25.Text),Value(DataCardValue26.Text),Value(DataCardValue27.Text),Value(DataCardValue28.Text),Value(DataCardValue29.Text),Value(DataCardValue30.Text),Value(DataCardValue31.Text),Value(DataCardValue32.Text),Value(DataCardValue33.Text),Value(DataCardValue34.Text),Value(DataCardValue35.Text),Value(DataCardValue36.Text),Value(DataCardValue37.Text))<>1, Notify("Summation of percentage must be 100%")); If(CountRows(Filter(ProjectResourceExcel, User().Email And DataCardValue9.Text And Dropdown3.Selected.Value))>0, Notify("Entry already exists."),CountRows(Filter(ProjectResourceExcel, User().Email And DataCardValue9.Text And Dropdown3.Selected.Value))=0,SubmitForm(EditForm1))
I have a lot of datacards. For clear visualization and that's why I didn't include them all in the previous post. However, could this be the reason of delegation? But without the 'CountRows', I did not encounter delegation problem.

Best,
exploring G

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ANB 7,252 Super User 2026 Season 1 on at

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Hi @exploringG ,

Can you send me the screenshot of delegation warning? I mean on which column you are getting delegation warning?

Also, in filter function, you need to have the condition with respect to column. Please check the below formula.

UserEmail
Year
Month
The above are column name, please use dedicated names of column.
If(CountRows(Filter(ProjectResourceExcel, UserEmail = User().Email And Year = DataCardValue9.Text And Month = Dropdown3.Selected.Value))>0, Notify("Entry already exists."),CountRows(Filter(ProjectResourceExcel, User().Email And DataCardValue9.Text And Dropdown3.Selected.Value))=0,SubmitForm(EditForm1))

Thanks,
ANB

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exploringG 82 on at

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Hi @ANB ,

This is the screenshot.

Best,
exploringG

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ANB 7,252 Super User 2026 Season 1 on at

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Hi @exploringG ,

Please check this:

In filter function, you need to have the condition with respect to column. Please check the below formula.

UserEmail
Year
Month
The above are column name, please use dedicated names of column from Data Source "ProjectResourceExcel"

If(CountRows(Filter(ProjectResourceExcel, UserEmail = User().Email And Year = DataCardValue9.Text And Month = Dropdown3.Selected.Value))>0, Notify("Entry already exists."),CountRows(Filter(ProjectResourceExcel, User().Email And DataCardValue9.Text And Dropdown3.Selected.Value))=0,SubmitForm(EditForm1))

I hope this helps.
Please click Accept as solution 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 giving it Thumbs.
Thanks,
ANB

Was this reply helpful? Yes No