Merge PDFs Failing with error 400

Question

Quite a few months ago I created a Power Automate flow which does the following:
1. Query Sharepoint site for docx files
2. Convert each docx file to pdf
3. Store the content of the converted pdf file to an array variable
4. Merge pdfs in the array variable and save as a new file

Since being built, this flow has worked 100% of the time. However, it has been failing since last week and this is the error:

I have verified that the content of the files are not the issue and all of the files are being converted to PDF from docx, it is only the Merge PDF action that is failing. Has anyone seen this before? I checked Adobe's site to see if there were service issues and none were listed.
Any help would be greatly appreciated!

Casey36153480oyhb · Answer

I am having the same exact issue. I created the flow in June 2023. My flow does the same thing yours does and worked 100% of the time until last week as well. I am getting the same error you are.

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