The structure check function ensures that the values in the 'Level' column do not violate structure rules.
For instance, when the table to the right is analyzed, a popup appears indicating that a level has been skipped. The function highlights the error in the table.
In this example the structure goes from level 3 to level 5. Level 4 has been skipped in error.
The function also checks for:
Maximum level doesn't exceed a limit for some functions
Number of top levels of indenture. Typically only one top level of indenture is used, but the user can choose to allow more in user preferences.