The XML file is a interference detection report generated in SMC.
In my case hard clashes, between superstructures & MEP.
This XML file should contain information about where these identified chashes are located (within the model).
When imported to ArchiCAD it should then be possible to get a camera view for remodelling/re-engineering purposses. (correct the hard chashes)
You can check with your reseller, but if it's not on the Solibri web site, then ... you did say in the beginning that you are working on 15, but it's always better to have the version you work on in the signature