tsc_ArcObservation

This a subclass of tsc_Observation, and contains a tsc_ArcDefinition.  This type of observation is used to store Arcs calculated by SCAPI applications.

Such an observation can only be appended to a database which contains the referenced points.  Furthermore, unlike points, an arc is a uniquely named item and can only be added to a database that does not already contain an arc of the same name (unless it is marked as deleted).

Unlike other observations, environment information for the arc comes from the tsc_Database it is stored in; this environment is a changeable global setting for the job and controls all database arcs.

While you may have defined and calculated your arc using a specific environment, once in the database it is the current job setting that will be used.