Error Occurred on the Server — but no List limits are exceeded

[sam0]

Hello all,

I began seeing a red error message on a new form I began work on yesterday, but I cannot find an explanation! The error message indicates only that an error has occurred, and not much more than that. I researched this error message string and concluded that some kind of list threshold has been exceeded, but I can't find out what threshold that is.

This link indicates that there are several dozens of columns of each type that should be okay. I thought maybe because none of my fields are required that this would be an issue. However, after re-requiring the Title column this issue persisted. I recall previously that a list required at least one single line of text. I guess this is no longer the case? I created a test list and a test form and it gave no fuss over the Title field/any other field being required.

At any rate, the only other messages I've found about this are related to having too many lookup fields, or the message marked as an answer was not an answer:

Too many lookup columns  – I only have four lookup columns, and another of my lists with more lookup columns is behaving well enough.

"Issue resolved, no idea why" – no answer

Fixed by adding a redundant data source and changing all formulas to it – this answer, while plausible and also frustrating, didn't work for me (see screenshots).

"Couldn't reproduce the issue, try recreating everything from scratch!" – this cannot be an answer. It was working yesterday.

Simply put, if I have to delete the data source and re-link it, all my data cards are shot! All the formulas are shot! 

This is every column in my list (I don't see how I could be over one of the limits):

Single line of text

Person or Group

Single line of text

Person or Group

Single line of text

Date and Time

Date and Time

Choice

Lookup

Lookup

Currency

Lookup

Lookup

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Multiple lines of text

Single line of text

Date and Time

Yes/No

Person or Group

Single line of text

Date and Time

Yes/No

Person or Group

Single line of text

Date and Time

Yes/No

Person or Group

Single line of text

Date and Time

Yes/No

Person or Group

Single line of text

Date and Time

Yes/No

Person or Group

Single line of text

Date and Time

Yes/No

Person or Group

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Currency

Person or Group

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Choice

Hyperlink or Picture

Single line of text

Number

Number

Number

Number

Number

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Single line of text

Date and Time

Date and Time

Person or Group

Person or Group

I really appreciate anybody taking the time to investigate this issue. It's quite silly. I don't have time to recreate an entire form from scratch. That kind of timesink wasn't a part of the deal!

[ericonline · Accepted solution]

This happened to me today as well. I can't tell you why, but I can show you how to capture it in action if it occurs in the future so that reporting it on the forums is more effective. 

• Use Chrome browser
• Once your app loads, open Chrome Dev Tools
• Click Network
• Look for errors. 

You'll have to poke around a bit in the Dev Tools if its your first time. The Dev Tools will crash if you reload the app, so you can only open Dev Tools after the app has loaded. 

See a short GIF I posted here today of the tool in action. 

[v-xida-msft]

Hi @sam0,

Do you create a custom form for your SP list using PowerApps?

According to the screenshot that you provided, I suppose that you created a custom SP list form using PowerApps, is it true?

I have made a test on my side and don't have the issue that you mentioned. The screenshot as below:

Please check if the DataSource property of the SharePointForm1 (Edit Form control) and the SharePointIntegration control are both set to following formula:

ManagerSearchActivity

Note: The 'ManagerSearchActivity' is represents your SP list name.

In addition, please also take a try to clear cache of your browser and re-customize a form for your SP list, then try again to check if the issue is solved. 

You could also take a try to customize a form for your SP list within another browser, then check if the issue still exists.

More details about customizing a SharePoint list form using PowerApps, please check the following article:

https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/customize-list-form

Best regards,

Kris

[sam0]

Interesting! I had looked at the Dev Tools as well, but didn't notice this message till now. I must not have given it enough time.

\message\: \The query cannot be completed because the number of lookup columns it contains exceeds the lookup column threshold enforced by the administrator.

Looks like the Person or Group fields are considered Lookup columns. I found this in SharePoint documentation:

 1. What classifies as Lookup columns: Standard lookup columns, single-value managed metadata, multiple-value managed metadata, single-value people and group columns, and multiple-value people and group columns , Workflow Status , Created by , Modified by ( people ) are obviously counted as lookup columns .

I find it interesting that Person or Group fields are obviously lookup columns... Oh well.

[ericonline]

Nice work! One step closer to having actual PowerApps debugging documented!