Third party system to SAP PO single stack Java via RFC

[ne0n]

Hi together,

I have a requirement to send IDocs from a non-SAP third party system (which uses a RFC library) to SAP PO single stack java via RFC.

Here's what I've done to achieve this:

On SAP PO side:

- configure a cloned inboundRA in NWA to register a Program ID / TP Name in PO Gateway:

- configure a IDoc Sender channel to use this cloned inboundRA

On third party system:

- I set the following parameters:

ASHOST: <PO hostname>

SYSNR: <PO sysnr>

TPNAME: <Program ID>

USER: <user>

PASSWD: <password>

On my third party system I get the following error:

Fehler beim RfcOpenEx: key=RFC_ERROR_COMMUNICATION message=CMALLC : rc=20 > Connect from SAP gateway to RFC server failed
Connect_PM GWHOST=<PO hostname>, GWSERV=<PO gw service>, SYSNR=<PO sysno>

LOCATION SAP-Gateway on host <PO hostname FQDN> / <PO gw port>
ERROR Gateway not connected to local R/3
TIME Wed Jul 16 16:28:53 2020
RELEASE 753
COMPONENT SAP-Gateway
VERSION 2
RC 726
MODULE /bas/753_REL/src/krn/si/gw/gwxxrd.c
LINE 8564
COUNTER 86752

What am I missing here? What could be the problem? How to get this connection working?

Thanks in advance!

[philippeaddor]

And one more try: I see that in your inboundRA the Destination property is missing. You can set it to XI_IDOC_DEFAULT_DESTINATION. It points to an ABAP Backend that contains the metadata, which PO needs to load form the sender when receiving an idoc but can't do so because in your case the sender is non-ABAP.

Philippe

[ne0n]

Thank you for that hint. Unfortunately didn't help either. I'll have to keep on trying and searching for a solution.

regards

Jonas

[philippeaddor]

There's a SAP note for this error, but I'm not sure if it helps much: https://launchpad.support.sap.com/#/notes/1922046

Obviously, PO (Java) is not an R/3 (ABAP) system. So the error described in the note doesn't really relate to a PO system. I don't know how the InboundRA exactly works, but I guess it has to emulate the RFC function module that usually receives an Idoc on an R/3 / ECC / S/4 system. Somehow this seems to not work correctly in your case (or the 3rd party doesn't call the right FM?). I don't have the possibility to simulate it, so I can only guess.

One more thing: Did you set the RA property "local" to "true" (it's not visible on the screenshot)? Maybe that makes a difference, but I'm not sure neither.

Best Regards,

Philippe

[ne0n]

Hi Philippe,

thank you for your answer. I already read that SAP note before, but unfortunately, as you already pointed out, the error doesn't really relate to Java.

I did not set the property local at all. I'll give it a try.

regards

Jonas

[philippeaddor]

Hi Jonas

Also try local = false (just in case).

One more thing: Have you analyzed the default trace in PO NWA to see if the call has somehow been logged and maybe gives you more information?

Regards,

Philippe

[AtulKumarJain]

Hi ne0n

Did you check ping test is working from source to destination?

Is telnet working on specified port ?

Please check these base steps to start troubleshooting on it.

BR

Atul

[ne0n]

Hello Atul,

both things are working properly. Ping is working and telnet to the gateway port is also working.

regards

Jonas