SAP Systemstatus / Userstatus

[#1]

You know when you think you know a lot and then everything feels so unreal, you dont understand nothing anymore,
and you want to get out of the Rabit-Hole(...)

In SAP there are the tables

TJ30/TJ30T (User-Status)
TJ02/Texttable TJ02T (Systemstatus)

According to a Kollege 1 User-Status is uniquely assigned to exactly 1
System-Status. Where/how do I Find this unique link. I mean there must be a table where TJ02-ISTAT
where TJ02-ISTAT is linked to TJ30-ESTAT?

I want to set new User Status of an Object (in this case it is a Network in PS with BAPI)
In object oriented Programming I define Interfaces with constants like this:

BEGIN OF mc_user_status,
released TYPE j_status VALUE 'E0004', "Anwenderstatus Freigegeben
END OF mc_user_status .

Is this a bad approach? Which "Status" or Primary Key "defines" the "State" "RELEASED" ob this Object?
Would this be better

BEGIN OF mc_system_status,
released TYPE j_status VALUE 'I0004', "Systemstatus Freigegeben"
END OF mc_user_status .

Now I determine the user-status which is assigned to the system-Status 'I0004' and this one I set with the BAPI as a new User-Status

[RaymondGiuseppi]

As far as I am aware, the assertion that one user status is uniquely assigned to exactly one system status due to a direct link between TJ02-ISTAT and TJ30-ESTAT is not strictly accurate. The two statuses represent system and user status concepts stored in different tables, related through application or profile logic but not inherently in a one-to-one relationship.

Are you actually attempting to change a system status using the BAPI reserved for user status? If so, that should not work, usually you have to find the correct BAPI for this systeme status and object (e.g. BAPI_PRODORD_RELEASE or BAPI_ALM_NOTIF_CLOSE)