If you are using the Data Markings plugin, the tool is very good about annotating the data security levels. However, if you are using this data outside of the tool, you need to know how to get at the marking. For example, if exporting via excel or using VTL with the Report Wizard. The data is there, as the tool uses it, but how do you access the same information? Here is a block with a part where the block (Electronics) is S and the use of the part (senor) is set to TS. The result is that the block gets the rollup of the part and thus has both S and TS markings.

In the table, we can see the tool shows this for the elements (blocks, parts and others). The value column is a simple property on the block. The marking of the element is accessed via a custom column which gets the constraints of the element:

If you export this table, you get both the rollup and the specific markings. In a similar way you can use the same method to access marking/rollup using VTL with the ReportWizard.

CustomQueryDialog ReportWizardCustomColumn Data Markings Plugin