Internal error when redefinind service with entity types and associations

Question

Dear gateway specialists,
I have created a gateway service with several entity types and several associations together with corresponding navigation properties.
Then I have created another service in which I want to redefine the first service with all the entity types and associations.
But the redefinition ends with an internal error (message no. /IWBEP/SBCM001) and the navigation properties are not imported (entities and associations seem to be o.k.).
What could be the reason for the error? And why might the navigations not be imported?
Thanks!
Regards,
Juergen
P.S. I found SAP note 2027049 "Service Builder Redefiniton - Extend of Odata service with Associations" which I've implemented, but without success

Answer 1

Hi,
on debugging I found out that the changes coming with SAP note 2027049 are  actually causing the problem:
In method DO_EXECUTE_COMMAND of program /IWBEP/LFG_MOD_GENI02 the note inserts the following piece of code:
IF gt_odata_associations IS NOT INITIAL.
  LOOP AT gt_odata_associations ASSIGNING <ls_association>.
       READ TABLE gt_odata_entities ASSIGNING <ls_entities>
          WITH KEY name = <ls_association>-left_end.
       IF sy-subrc = 0.
            READ TABLE GT_ENTITY_TYPES ASSIGNING <ls_entity_types>
               WITH KEY name = <ls_entities>-name.
            IF sy-subrc = 0.
                 READ TABLE gt_navigation_props ASSIGNING <ls_nav_prop>
                    WITH KEY source_entity_id = <ls_entity_types>-entity_id.
                 IF sy-subrc = 0.
                      ls_entity_np-name = <ls_nav_prop>-name.
                      ls_entity_np-technical_name = <ls_nav_prop>-external_name.
                      ls_entity_np-relation_ship = <ls_association>-name.
                      ls_entity_np-from_role = <ls_association>-left_end.
                      ls_entity_np-to_role = <ls_association>-right_end.
                      APPEND ls_entity_np to <ls_entities>-nav_props.
                 ENDIF.
           ENDIF.
       ENDIF.
  ENDLOOP.
ENDIF.
SORT gt_odata_entities BY technical_name.
But the statement
     READ TABLE GT_ENTITY_TYPES ASSIGNING <ls_entity_types>...
is not correct. It leads to wrong results if an entity has more than one navigation properties as the key is not fully specified.
Regards,
Juergen