Asset and Asset tag are empty for the imported CIs
Model category does not exist for cmdb_ci_computer and cmdb_ci_win_server class.
SCCM Integration imports CI into cmdb_ci_computer and cmdb_ci_win_server class.If assets needs to be created for computers and server class as part of inetgration then model category should exist for those classes.Please follow the below steps to create a model category.
How to create a model category for a CI class?
1.Open Product Catalog > Product Models > Model Categories.
3.Create a Model Category for 'cmdb_ci_computer' and 'cmdb_ci_win_server' class and associate with alm_hardware asset.
Please check ServiceNow's documentation site to know more about Model categories