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Power Automate - Building Flows
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Update a row – Problem with “/” in column title

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I have a problem in PowerAutomate. I created a flow that updates an “output” excel file based on changes I make in the “input” file. Both files contain the exact same columns and lines. The flow looks like the picture 1 (English translation of the elements on the left side).

In the last step “update a row” I listed all lines from the “output” table and individually selected all lines from the “input” table to align the columns in each table (since it’s like 300 columns that was a pain, I also appreciate any help on how to do this faster/for multiple lines at a time). I used the lightning symbol each time to list the present columns. Please see picture 3 (couldn't upload picture 2 because of restrictions only uploading 3 pictures).

Here comes my problem: I can’t save my flow after al this manual work. The problem seems to be the “/” signs in the column titles. When I remove this column, the next column with a “/” in the title causes this problem. I have like 300 columns out of which the most contain a “/”, so it is not really an option to remove it from the titles.

The error note:
Fehler beim Speichern des Flows. Code: WorkflowOperationParametersExtraParameter, Meldung: "The API operation does not contain a definition for parameter 'item/ Pieces MPL 25.26'.".

In the error note, the “/” has been replaced with a “.”. When I hover the mouse over the added column (picture 3) the “/” has been replaced with “~1”. See picture 4.

Does anybody know how to solve/workaround this problem, without renaming the columns ? I have PowerQuery connected to the output file and the input file is a standard template, thus would like to avoid changing the column names.
 
  • Suggested answer
    abc 123 Profile Picture
    784 Super User 2025 Season 1 on at
    Update a row – Problem with “/” in column title
    try replacing the code to use an escape code  %2F
     
    item%2F Pieces MPL 25.26
     
    ??
     
    Never, ever, use anything but letter and numbers in a fieldname. No spaces, dashes, or special characters..
     

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