Hi,
To map them together even if providers are different you need to have same technical name. I would suggest to make use of navigational attribute here.
Make 0GLACCOUNT as navigational attribute of 0ASSET and load the same data in it what being loaded in 0ASSET_CLASS.
Now in multiprovider do the assignment for 0GLACCOUNT and 0ASSET__0GLACCOUNT.
This way you can use the one infoobject to display data from two providers.
Regards,
AL