I have a DTD file and an XML file.
I referred to the DTD file in the XML file using the following statement referring to this website.
<!DOCTYPE XXXXX SYSTEM path\to\file.dtd>.
When I try to import the XML file into Excel using XML Data import function it throws an error

I have tried copying the entire DTD file into the XML under the <!DOCTYPE [ ] to avoid this situation, but the same error persists. I'm not familiar with using XML files.
Question: How can I fix this XML file (along with DTD) and import the same into Excelc successfully