Hi again experts!
I want to ask for help with a very odd problem regarding the My Leave request (v2) Fiori app.
The Landscape:
- Customer has the Gateway as a hub server.
- The systems are on NW level 740:
--- Gateway has GWFND 740 SP10. SAP_UI 740 SP 12. UIHR001 rel 100 SP 00.
--- Backend is EhP7. It has GWFND_740 SP09. SAP_UI740 SP 08. GBX01HR rel 600 SP 00. SAP_HR is rel 604 SP 66.
- SAPUI5 is on level 1.28.21.
- Several HCM and custom Fioris are deployed, for example My Timesheet. All other Fioris work fine for everyone except the My Leave request Fiori.
- Users generally use Internet Explorer 11, but they can also user Firefox as the secondary browser. No Chrome allowed.
1. Problem is that some users get this error when opening the My Leave request app:
"A problem has occurred with your connectionundefined".

2. Then they get into the LR app but then another error appears:
"RFC Error: Access using a 'ZERO' object reference is not possible". Leave history isn't showing anything and it's not possible to create new requests. This error is also seen in browser debugger console and in ST22 dump analysis.

The ST22 dump happens in this code location:
The termination occurred in ABAP program "CL_PT_REQ_HEADER==============CP",
in "IF_PT_REQ_HEADER~GET_ACTOR_ATTRIBS". The main program
was "SAPMSSY1".
If the affected user creates a leave request using Firefox it will succeed and it will go to the manager for approval normally. Even though they still get the first "connetionundefined" error too.
This error is very hard to debug since this happens only in production and the problem is not global.
What I have checked and found to be correct, I think:
What else could I check or do? Is there anything to check or test in these areas:
- Single Sign-on
- User preferences or master data in the backend. Actor IDs still corrupted?
- Browser settings...
Thanks & br,
Ossi M