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Power App Times Out - Too much data to parse

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Posted on by BN09

I'm seeking advice on optimizing a Power Apps flow for updating stock quantities on my ecommerce site. Here's the challenge:

Data Source: I download a tab-delimited file via FTP from my supplier, containing around 350,000 SKUs.
Current Flow:
- Download: Successfully download the file using Power Apps.
- Parse: Attempt to parse the 350,000 SKUs.
- Extract: Retrieve the 250 SKUs relevant to my site.
- Update: Update the stock quantities on my ecommerce site.
Issue: The flow times out during parsing, making it inefficient.

I need guidance on architecting this solution more effectively. How can I efficiently process such a large file and update only the relevant SKUs on my site without timing out? Any insights or recommended practices would be greatly appreciated.

Thanks in advance!

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Building Power Apps

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Pstork1 69,657 Most Valuable Professional on at

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My primary suggestion would be to not trigger the flow from Power Apps. If you trigger the flow using a manual button or a recurrence trigger in Power Automate the flow can run for days without timing out. Is there a particular reason you need to trigger it from Power Apps?

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BN09 6 on at

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I intend to trigger the flow on a schedule (2 AM once a day). When I test the flow by triggering it manually, it really chugs parsing the tab delimited file and then doing a look-up against the SKUs. My thought, based on little experience, is to parse the file and store it in a spreadsheet first then do the SKU lookup. Another thought is to only parse the SKUs I need from the text file. So, I would first grab the SKUs from my ecommerce site and then use those to only parse the SKUs from the FTP file. Not sure if this is possible.

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Pstork1 69,657 Most Valuable Professional on at

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You won't get the timeout issue if you start it at 2:00 AM using a recurrence trigger. The problem is that Power Apps expects a response from the flow within a couple minutes. That is why its timing out. Its a Power Apps issue, not a Power Automate issue. I would switch the trigger first, then we can try to help improve the performance. But I don't think you will ever get it to run fast enough to trigger in Power Apps.

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