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String length too long, don't know where to look.

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Posted on by JFras

Hi, I have a flow where when a sharepoint list item is created a word document is updated with the details from the item. I am getting the below error:

The 'inputs.parameters' of workflow operation 'Update_file_properties' of type 'OpenApiConnection' is not valid. Error details: The API operation 'PatchFileItem' requires the property 'item/QuoteNumber' to be a string of maximum length '15' but is of length '16'.

First, I went to the sharepoint list and changed the column settings to make the maximum number of characters = 20. When that didn't fix the problem I then went into the flow and reloaded the trigger output "QuoteNumber" in the 'update file properties' action. Now I'm not sure where else I can look to change the max length. It must be stuck at 15 somewhere still.

Thanks,

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Building flows

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creativeopinion 10,502 Super User 2025 Season 2 on at

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@JFras It's hard to offer any recommendations without seeing your full flow and the logic behind it. If you are using the new designer, toggle it off and click each action to expand it. Upload a screenshot of your flow in edit mode.

In the meantime, you might be interested in this YT tutorial:

5 Power Automate Troubleshooting FAQs and Helpful Tips for Creating Better Flows

In this Power Automate tutorial, I explore 5 frequently asked questions that pop up when troubleshooting a flow. If you’d like to to level up your Power Automate flow skills and learn how to troubleshoot your Power Automate flow—this tutorial is for you!

IN THIS VIDEO:
✓ How to troubleshoot a false Condition action result
✓ How to get dynamic content when it isn’t selectable from the list of dynamic content
✓ How to troubleshoot an Apply to Each action that isn’t looping through
✓ How to troubleshoot a skipped Apply to Each action
✓ How to troubleshoot a Filter Query
✓ How to use a SharePoint yes/no column in a Filter Query
✓ How to use Compose actions to troubleshoot a Power Automate flow
✓ How to troubleshoot multiple emails being sent
✓ How to troubleshoot multiple Teams messages being sent

Hope this helps!

Consider giving me a ❤️ if you liked my response!

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David_MA 12,966 Super User 2025 Season 2 on at

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Please show the action as how it is configured in your workflow on which the error is being generated. Then also show the configuration of the field in your SharePoint list. You may also want to add a compose action to your flow and put the value into it so you can see what is being returned in the flow run. This will help with troubleshooting. You may be returning a lot more characters without realizing it, but there is no way to tell without seeing your flow and run information.

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