500 function module "/iwfnd/fm_micro_hub_request" not found. when calling backend

[former_member340335]

Hi all,

We have configured a GW + Backend scenario and performed the configuration steps as described in SAP guides to communicate SAP Gateway to the ERP backend.

When trying to test a service, for example

http://<server:port>/sap/opu/odata/sap/gbapp_poapproval?sap-client=200

An HTTP 500 error is raised, and in the details we can see:

500 function module "/iwfnd/fm_micro_hub_request" not found.

As far as I know, /iwfnd/fm_micro_hub_request function module should not be in the backend, since all backend components have already been installed (IW_BEP, mainly)

Could you please help?

[Andre_Fischer]

Hi Francisco,

the function module /IWFND/FM_MICRO_HUB_REQUEST is indeed called in the backend as described in the blog

https://blogs.sap.com/2018/01/23/deployment-options-with-sap-gateway/ of my colleague mrajasekarana#overview .

Reason is that you try to use the "OData on Backend" Scenario which requires SAP NW 750 SP04 at Minimum on both the hub and the backend as I have described here.

https://blogs.sap.com/2016/10/10/take-advantage-performance-improvements-sap-gateway-sap-netweaver-7...

So remove the "OData on backend" or "Mirco hub" flag from your System alias Definition.

Regards,

Andre

[former_member340335]

Hi Andre,

Thank you very much for your prompt response. I removed the "OData on backend" option and it worked perfectly.

By the way, I read a few days ago your Quick Guide for gateway connection, it's a great help, very clear.

Thanks again for your help!

Regards

Francisco