Add wait time between paging on Webpage Extraction

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Posted on by apaulso9

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Hello all,

I am extracting a table of data from a web page that requires paging. Some of the tables have 100 pages each with 15 entries. I am running into an issue where around page 20 the web extraction fails because the "Data element can't be found" however, it is truly because the page takes a moment to load. The paging occurs within the "Extract Web page Data" action so I can't set up a wait action. Is there a way to force the paging the extraction to wait for the webpage to load after paging to the next entries in the table?

Update:

Even when manually moving to the next page the data extraction fails on Page 21. Is there a limit to how many times you can use extract data in a loop?

Here is the error message I get in both case:

Correlation Id: b68ebefb-6212-43c0-abf7-45bc0049809a

Data extraction element not found.: Microsoft.PowerPlatform.PowerAutomate.Desktop.Actions.SDK.ActionException: Failed to extract data (web page error while extracting data). ---> System.Exception: Data extraction element not found.
at Microsoft.Flow.RPA.Desktop.UIAutomation.WebAutomation.Core.DataExtraction.LegacyExtractorBase`1.GetExtractionResults(Stopwatch stopwatch, Nullable`1 timeout)
at .....

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Power Automate Desktop

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BrendonKoz 60 on at

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Could you run an action within the Browser automation category for "Run JavaScript function on the webpage" to cause a blocking wait time until whatever you need completely loaded has completed?

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Agnius Bartninkas Most Valuable Professional on at

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I recommend not using the paging functionality if Extract data from web page. It's not exactly reliable anyway and it doesn't really work with most pages.

I would suggest building a loop and extracting each page individually, and then merging the results. See this tutorial for reference: https://www.youtube.com/watch?v=yvoUBwCqdn0&ab_channel=AndersJensen

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apaulso9 200 on at

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It turns out that even when I iterate through the pages it always fails on page 21. Whether it uses paging or manual clicks. Is there a limit to paging?

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Agnius Bartninkas Most Valuable Professional on at

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There shouldn't be. Maybe there's something different with the web page once you reach page 21? Are there more pages afterwards?

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