When trying to create a fact definition using the It Data Mart plugin. It returns the following error message; "Table name is too long. Invalid insert".
London Patch 5
com.snc.it_data_mart was plugin used by Financial Management Cost Transparency/Financial modelling before Istanbul. The dependency is removed by Istanbul as it was creating a lot of sync issues.
The data mart is not used anymore by any of Servicenow out of box functionality and it's not recommended to use as a standalone feature as there is no support for the feature.
The functionality is not available on the current versions.