Assign EQUNR to VORNR in Service Order

Question

I'm using R/3 v4.70.  After a Service Order has been created via a Service Notification, I need to 1. Add new Operation(s); 2. Add new Equipment(s); and 3. Assign those equipments to the appropriate operations.  The problem arises in that the user does not want to execute IW32 on-line, and wants the modification done via BDC, BAPI or whatever in custom ABAP program.
The problem is this...the operations and equipments can be added easily.  However, from the objects tab in IW32, we choose the "Assignments" action button and proceed to a pop-up screen with tree and node structure.  Adding one operation and one equipment at a time results in one available node, which is the simplest way to do the associations.  But, SAP does not "see" the selection of the node on the SAPLIOPEXT 0300 screen (on single click), or if it does, SAP assigns some temporary value like '%_GC 163 22' to the OK_CODE upon double-click, but the value is not consistent. It may change (or remain the same) on each subsequent entry to the screen.  SAP does see the OK_CODE WEIT, and proceeds normally whether or not the relationship actually gets created (or whether double-click did or did not occur).
Questions:  How does one accomplish this one-to-one assignment of object to operation in IW32 outside of the OLTP environment?  Or, is there an alternative transaction, BAPI, or ? that will result in creation of this relationship?
I note that SAP is using FM IOPOL_RELATION_CREATE internally...Is there a way we can somehow replicate that action (which appears to ultimately result in an entry in table OBJK) outside of IW32?

Answer 1

SAP has responded. We're going to use some development that I already have, which updates IW32 for activities (operations) and objects (equipments), and saves.  Subsequently, I have a custom function module which looks at operations and objects (AFVC and OBJK), searches OPROL for the links and calls the SAP function module IOPOL_RELATION_CREATE.  At the end of the process, I commit work to cause the update buffer contents to be pushed to OPROL.