Fiori app error - /IWEP/CM_MGW_RT022

[former_member595020]

Dear Experts,

I am working on an ECC6 Ehp8-system (backend) with a frontend (Gateway, Fiori) and after implementing a transactional app which is delivered by SAP I get in the app a message “error while saving the request: wrong assignment data” (/IWEP/CM_MGW_RT022).

In /IWBEP/ERROR_LOG I can find this message /IWEP/CM_MGW_RT022. Following I’ve checked so far:
There seems to be no auth. error in SU53 in backend/frontend. There’s no shortdump in backend/frontend. I didn't find an appropriate OSS note.

Could somebody please give me some hints how to solve that?

Thank you,
GM

console-iwbep-cm-mgw-rt-022.png

iwfnd-error-log.png

console-iwbep-cx-mgw-busi-exception.png

[former_member595020]

Hi,

I've refreshed both meta-data caches. Afterwards I got another error message and found an OSS-note which helped to get rid of the error message. But now I am getting again an error related to /IWEP/CM_MGW_RT022. The error text in the Gateway Error log is "Wrong assignment data." I've attached some further screenshots.gateway-error-messages.png

I didn't found an appropriate OSS-note. Do you've an idea how to proceed?

Txs,

Gerd

[former_member828680]

hi Gerd

how did you solve this issue?, I got the same message in SLG1 when substitute user approved a PO. I looked for some notes but couldn't find something related.

I appreciate for your help.

[former_member595020]

Hello,

we don‘t have the micro hub scenario active, i.e. in ‚Manage SAP System Aliases‘ the checkbox ‚OData on Backend‘ is not flagged.

We’re on Netweaver 7.5 SP11 (03/18) in the frontend server and use Netweaver 7.4 SP16 in the backend server.

Do you’ve any other ideas?

Txs,

Gerd

[geert-janklaps]

Hi Gerd,

Did you try to refresh the metadata cache for service RM_FIORI_PROJECT_SRV on both backend and frontend in transaction /IWFND/MAINT_SERVICE? (best to do backend first, then frontend)

Another thing that might solve your problem is running report /ui2/invalidate_global_caches to clear all Fiori / Gateway caches. (be careful it might take some time rebuild the caches, so the first time you load the launchpad you might encounter slow performance / incomplete loading of the tiles)

Best regards,

Geert-Jan Klaps

[geert-janklaps]

Hi,

I assume you are running a recent netweaver stack as well? Could you check if you are using a micro hub scenario in your frontend server configuration?

You can check if you are using a micro hub scenario here (frontend server):

If so, please check if note 2617459 (v2 Batch Request: Fix empty response of batch operation in Micro Hub scenario) applies to your backend system. I had a similar issue at a customer after an upgrade, this note solved this issue. (might have some prerequisite notes depending on your system release)

Best regards,

Geert-Jan Klaps