Attribute data-name fetches error message in epub

[Geobop]

I'm using SVG images in an epub I'm working on. I'm using the software program Sigil to create the epub, and I check it for errors with a program called Pagina E-PUB Checker.

Everything looks fine when I preview my epub in Apple Books, so I was surprised to discover that all my images fetch errors when I check my epub in Pagina. Here's the error message:

Error while parsing file: attribute "data-name" not allowed here; expected attribute "alignment-baseline", "baseProfile" (followed by a LONG list of attributes that are presumably OK)

If I click on an image in Sigil, it reveals the source code:

<svg id="Circular_Reasoning" data-name="Circular Reasoning"

Someone told me all I need to do is delete data-name="Circular Reasoning".

But before I start fixing them, I just want to try and understand the bigger picture. Is the data-name property something unimportant that I can delete in my images, regardless of where I use them (e.g. epug, website, etc.)? Also, if it needs to be deleted, is there a way to delete it by default?

Thanks.

[Mylenium · Accepted solution]

Data names are reserved for readable meta data fields, i.e. text in archival/ library systems for indexing/ search purposes. Unless you expect your book to become part of such a system you should not have to worry too much.

Mylenium