Unable to add a version to office files(newer ie., .docx, .xlsx, .pptx) in Sharepoint Online when custom properties are added

Question

We are trying to upload content to MS SharePoint using REST API / Sharepoint client UI, while uploading MS Office documents (.docx, .xslx, .pptx) along with required properties,

Receiving an error: " You must fill out all required properties before checking in this document) , uploaded version has blank meta data for required fields. This is not the case for other documents - pdf, doc, xls etc.

Can someone please advise on why SharePoint is treating the documents differently and also provide inputs on resolving this issue.

Answer 1

Before checking in the docx file, you need to fill in the value for the required column.

Updated:
You could take a reference to this document:You aren't prompted for required information when you upload a file to a SharePoint Online library using the new experience version

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Answer 2

Thanks @Amos Wu-MSFT for reply. But I think you didn't get the issue clearly, So below are the steps to reproduce our issue

1. Upload a docx file in a folder/doc library with custom mandatory properties (in our case - Target Scope, Target control type) and provide values for mandatory properties
2. Now checkout document and upload a new docx file.
3. Goto Options and click checkin.

Expectation: Checkin should be successfull and new file should be uploaded and already provided mandatory properties values should be retained

But currently the newly checkin file is not retaining the custom mandatory properties values. This is only happening for new versions of MS Supported file types(.docx, .pptx, .xlsx) while it retains all values for old file types(.doc, .ppt, .xls)