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Failed Flow - using Text Feilds

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Posted on by AJ71

I have a flow that keeps failing with this error. The request has SAS authentication scheme, 'MSAuth1.0' authorization scheme or internal token scheme. Only one scheme should be used.

I have tracked it to a Text input field on my data that when a client enters either special Characters or Line Breaks in the text box on my website , this causes my flow to fail.

I can not control either of these entries in my text box Field options on my site . can any help with getting around this in Power automate?

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Building flows

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Power Platform 1919 2,205 Super User 2026 Season 1 on at

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Hi @AJ71,
Can you add exact error message, screenshots of the flow and power fx code on how you're calling the flow from powerapps?
based on that we can help you

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Ellis Karim 12,024 Super User 2026 Season 1 on at

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We would need to see the error message.

But looking at the ['#text'] property of the sample JSON object you provided, this is an array of strings and it has two items:

Do you want to join these texts into a single line?

Quantity: 250, Kind: Cardboard, Rear: Blank Rear, Card Holders: 1, Card Holder Details: Kianash Dalirv Workshop Manager, Rear Header: All Makes and Models, Rear Image: Map, Bullet Points: please change our email address to: m2u@m2u.au"

If so, please see the following example:

The expression in the Compose action is

join(variables('varData')?['Product_Variation_Details']?['#text'], ' ')

Ellis Karim
elliskarim.com | LinkedIn | Bluesky
If this solved your issue, please mark it as ✅ Accepted Answer. If it helped, feel free to give it a 🩷 Like!

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