Wrong data in power apps when clicking from SharePoint - sharepoint

Dears,
I am facing issue with customized form of power apps integrated in SharePoint.
when I view the list of SharePoint the data shows different and when I click on one item from the list it always shows the first record.
In the ITEM I am using the below formula.
If(IsBlank(SharePointIntegration.Selected) || IsEmpty(SharePointIntegration.Selected),First([#'testlist']),SharePointIntegration.Selected)
Thanks in advance.

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I am trying to connect Power BI to SharePoint to source my data and create a report. I see 3 SharePoint options under Get Data in Power BI. I am not very sure which one to use. I tried all 3 (SharePoint folder, SharePoint Online list and SharePoint list) but I end up with an error mentioned below:
The url I am using looks like:
Any help is appreciated.
You should use Sharepoint Online List.
This would prompt a message that would ask for your site, where the list is stored
The site URL structure should look like this
https://organization name.sharepoint.com/sites/site name/
After that, it would ask for your login details and finally a navigation pane with all the assets of that site including your list. In my case, Test 2 is the list.

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After struggling with this same issue, I finally fixed it by updating the data source settings in Power BI desktop for the particular SharePoint connection.
Go to Data Source Settings -> Select the SharePoint source you're referring to -> Edit Permissions -> Re-enter credentials and log in
This should allow you to see the data in the list when you refresh the data set. If not, I would suggest checking that the account used to connect to the SharePoint site has proper permissions.

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PowerForms supports external calls to SP lists or web services and displaying data in your form. It should do what you need.
You could use jQuery to do this. There is a community-driven jQuery Library for SharePoint. The SPCascadeDropdowns function is probably what you need.

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In the other side the web part retrieves information about the current team names from the Project Server, it follows the same procedure but it just feeds a Sharepoint list.
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If you use a webpart, the list is populated only when someone visits the page and EVERYTIME someone visits the page.
Wouldn't you want to populate your SharePoint list using a console application or a SharePoint timer job that runs every so often?
To go a step further. Use federated search. In SharePoint (MOSS) you can specify locations (content sources) for the search service to index. This data will then be queryable in your sites. Using either custom scopes / customized search queries you can retieve data and then filter / display it on your sites.

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What you want is the functionality delivered in PerformancePoint, which comes with a SharePoint E-Cal (although it was originally a separate product). The PPS Dashboard Item Web Part does exactly what you're looking for.

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