Hello All,
we have one issue with our RFID system connecting to WM system (SWD).
For most functions, external RFID server/middleware makes RFC call to SAP system. Means, from outside system to inside SAP. This seems to be working fine.
But in one case, SAP needs to print label to RFID printer. In this case, SAP is calling external RFID server/middleware using RFC destination. Means, from inside SAP to outside system. This is failing.
We think this has something to do with ECC60 being unicode system, and the RFC destination setup. We define rfc destination "ZRFID_SSI" in SM59. We define it same way as in as-is SSI 4.6B production system. But in SWD ECC60 system, SM59 has more options. We define as 'non-unicode' because target RFID server/middleware is non-unicode Windows server. RFC destination is actually working ok.
To send label to printer, SWD calls function ZFSSIRF202 with remote destination ZRFID_SSI. Listener on RFID server/middleware will respond to function call. This also seems to be working. But then, RFID server/middleware cannot process the data from ZFSSIRF202, log says that data is "0". (Actually, the first time SWD calls, log says 0 data, the 2nd time there is connection failure, the 3rd time it is 0 data, 4th time connection failure, etc, etc.)
Compared with production environment, everything is the same, except that SAP is unicode system. So, our suspicion is, that when ECC60 system sends data, it is encoded somewhat a little different than when SAP 46B system sends data. I have similar experience with our other interface (XSI), also involving RFC desintion, but XML file exchange. Here, ECC60 is encoding XML file with UTF-16, but SAP46B was encoding with UTF-8.
Anyone know how to help ?
Bluesky
