Hi @Mattias Vassberg,
Really appreciate your reply, but I'm still confused about this file size limit error. (It's common for a file to be 50MB in size, this shouldn't have a size limit.)
Maybe this article I referenced: Software boundaries and limits for SharePoint Servers 2016 and 2019 is so old that SharePoint server subscription edition there may be a new update about the limit on moving files.
I apologize for not being able to provide any further solutions to your problem with the resources we currently have available in the forum. We suggest you open a ticket.
Please accept my sincerely apologize for any in convenience this may cause. Thank you for your kind understanding.
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