Power Apps OnError to capture, suppress, and report all errors

Are you tired of your users getting errors in PowerApps? Then check how you can use the OnError property to deal with all of those unhandled errrors. Error messages from bad inputs, functions missing data, or even a Patch function gone wrong can all be dealt with without breaking a sweat. You will learn about OnError, IfError, Error, IsBlankOrError, Left, If, Filter and more. If you have errors in your Power Apps you need this video.

0:00 Power Apps OnError
1:51 PowerApps IfError and Handled Errors
2:28 Unhandled Errors in Power Apps
3:06 PowerApps App OnError property
5:35 Logging all of your Power Apps errors to a SharePoint data source
9:08 Suppressing Power Apps error messages
11:33 AllErrors
12:44 Using Left to deal with an error message over 255 character limit
14:13 Patch Errors handled vs. unhandled and what to do with them.
15:50 Using the Error function to create your own Error Record

[brendanbowen]

You're like...a mind reader, Shane. I was facing the challenge with one my large apps where I was a getting an error can't divide by zero; no idea what control was producing it. And then your video comes and that OnError under the App with FirstMessage record...mindblown. Thank you!

[Bekesam]

Oh Wow!! I wish I had seen this before, but glad to come across this. Thank you very much for posting Shane!!!!

[upgradeaerialphotos]

Great video Shane and very needed! Question, would patching to a Sharepoint list for errors be more or less efficient than patching to SQL?

[xXYourShadowDaniXx]

This is great and I think this information is what I needed to switch off of using Forms, I don't like that they can auto-layout etc if fields get added/removed etc.

[shingomcleod]

Hi Shane, I think I'm having issues with users ignoring the 'there's a new version of this app available, please refresh...' banner. What are your thoughts on storing the latest version in a SharePoint list, then OnStart: compare the SP stored version to the one hardcoded in the app, and if they are not the same prevent users from doing anything, unless the two match? Or is there a better way?

[joaobadaro]

The god of Power apps, thank you Shane!

[jayveebarretto]

Thank you for this informative video, Shayne! This can help us to debug any error that is not showing on the end-user.
Just curious if this OnError includes problem on network or internet?
Many thanks!

[sargunsohal]

Thanks Shane! This really saved me. Was exactly what I was looking for

[robbolles]

Thank you again Shane, Exactly the info I was looking for.

[MichaelDeBlasis]

Another very informative video. I was about to ask how do you find where random error message are coming from but I see that the on error property in combination with Notify will give the location in the notification message. Done and Done. That was starting to bug me. PUN!

[amberdrebaum]

Thank you for your help! Was curious if instead of Patch to SP list can you also send to Power Automate?

[Tiago]

Great video Shane!

Have u any video about concat errors from gallery before patch to sharepoint list? or something like that?

Thank you in advance

[Paul___L]

Love this Shane! I've got a new page with galleries which change template size on the count of items.... Division by 0 errors all over the place as it takes a second to load... Probably should pre load, but... I am where I am and this looks great!

Think I'd add it to add to a list via automate and then flag to me on teams of its a new fault, not previously in the app.

Thanks for the building blocks!

[shellybarrett]

So I implemented logging in my app. My data source is SQL. Once I implemented this, when a user was editing a form, some fields on the form that the user had filled out, the data was erased. When I removed the error preview feature, the data stayed. I still have the Code evaluating my errors table to see if it is blank on submission after my patch.

Have you seen this issue?

[megancusey]

I've been looking for documentation on what information is available on the AllErrors or FirstError record? Perhaps you have that information?

[PowerAppsEric]

Is that the intended behavior for the Set(x, Patch(...)) errors, or a bug? Seems un-PowerApps-ish.

[robinroy]

Really useful. Can we utilize trace in onerrror property to send each error to Azure app insights?

[VinayKumar-kywh]

Hello Shane Young. Can we record the Allerrors into SharePoint List

[raindenverraindenver]

Good explanation! But I wonder and did not find ANY information about concurrent patch or form submission for SQL server data. How to handle changes made by other users? ((

[SergioItashop]

Hi Shane Young. How To Customize this message "No item to display" ?