I am trying to include extracted structured data in my webpages.

I included this for description:

<meta itemprop="description" content="my description" />

However I realised that there is already a normal meta description on the page:

<meta name="description" content="my description" />

Is it ok to leave both of them or it is really necessary to merge them together maybe like:

<meta itemprop="description" name="description" content="" />
html html-meta microdata
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