You could enable check out and check in feature in versioning settings:
When you check in the file you could add comments as follows:
More information for your reference:
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We use SharePoint 2016 document library and enable the document version function. We use OOS and click "edit in word" to edit the word. The SharePoint document library will generate a new version history without comments when save the word file. How can we add comments when we save the document?
You could enable check out and check in feature in versioning settings:
When you check in the file you could add comments as follows:
More information for your reference: