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Former Member
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In case if you have a requirement to call your Odata service using /IWFND/CL_MGW_FAC_FACADE class follow this blog.

The class /IWFND/CL_MGW_FAC_FACADE provides, via its various methods, the support to create, read, update and delete entities, to get entitysets and to execute actions.

/IWFND/CL_MGW_FAC_FACADE=>GET_ENTITY reads entity based on the following parameters

  1. IV_SERVICE_NAME: refer to the Technical Service Name; in order to find the technical name follow the below steps;

  • Go to tcode /n/IWFND/MAINT_SERVICE and then search for OData service using

2. IV_SERVICE_NAME: refer to service version

  • Go to tcode /n/IWFND/MAINT_SERVICE and then search for OData service using the ablove screen will display the Odata service from that we need to pick the version.

3.  IV_SERVICE_NAME: refer to the entity set, defined in the service. We can find using tcode SEGW=>Choose the gateway service=>go to Entity Sets folder and select the entity set

4. IT_KEY_TAB: This is mainly for inputs required for the entity set.
5. IO_REST_REQUEST: Rest request
6. ER_ENTITY: Will have the result

This blog contain only the usage of create entity, if you get a understanding how to create you can use update, delete and read entity APIs.
In my case I pass information to create an incident in a different system and returns the entity with the Unique Identifier and the information of the incident.
Coding Needed:
** Create rest_request object
DATA: request TYPE REF TO /IWCOR/if_rest_request.
CREATE OBJECT request TYPE /iwcor/cl_rest_request.
*** Fill input parameters
data: ls_key_tab TYPE /iwfnd/s_mgw_name_value_pair,
lt_key_tab TYPE TABLE OF /iwfnd/s_mgw_name_value_pair,
lx_busi_exception TYPE REF TO /iwfnd/cx_mgw_busi_exception,
lx_tech_exception TYPE REF TO /iwfnd/cx_mgw_tech_exception,
lv_errorflag TYPE c LENGTH 1.

ls_entity TYPE <data structure>.

ls_entity-<field> = <some value>.
assign LS_ENTITY to <FS_INT>.
CALL METHOD /iwfnd/cl_mgw_fac_facade=>CREATE_ENTITY
iv_service_name = '*_SRV'
iv_version = '0001'
iv_entity_set_name = '*Set'
io_rest_request = request
cr_entity = lr_entity.

CATCH /iwfnd/cx_mgw_busi_exception INTO lx_busi_exception.
lv_errorflag = abap_true.
CATCH /iwfnd/cx_mgw_tech_exception INTO lx_tech_exception.
lv_errorflag = abap_true.

Disadvantage of this approach:
facade is meant to be called from an incoming REST call via the ICF. That’s for instance why you find the io_rest_request object in each of the facade’s methods.
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