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Exercise 1.5 - Reference an S/4 HANA Cloud Service in your Data Model

In this exercise, we will add an S/4 HANA Cloud service, the Business Partner to our project and associate it with our Capex model

Exercise 1.5.1 Discover an S/4 HANA Cloud Service and add it to your Data Model

On Home press "+" on the External Data Models tile. This opens the so-called Service Center on the left hand side.

There you can see a choice of SAP Systems. Technically these are destinations to OData Services in your backend system that an administrator has set up for you. These can be services from an S/4 HANA system or from other SAP backend systems.

In the lower part of the screen you can also see that there are APIs from SAP API Business Hub available. However, unlike the ones that are under SAP Systems these don't come with connectivity to the backends, so we stick with SAP Systems.

Choose API_BUSINESS_PARTNER

You can now see the details of the chosen Service, its entities and the properties for each entity, as well general data about the service.

Press on the Add External Data Model in the upper right corner of the screen.

This adds the chosen Service to you project.

Return to Home, after a couple of seconds the new Service will show up, its 43 entities are shown.

You can now close the left pane of the service center by clicking the highlighted button in the image above

Exercise 1.5.2 Associate a Business Partner Entity with the Capex Entity

On Home under Data Models press on the Capex entry to get back into the graphical modeler.

Here invoke the Add Relationship function on Capex again.

This is to create a new association to a Business Partner entity. However, we don't see the Business Partner on the canvas. This is because it is in another namespace than our own Capex and Category entities.

Therefore, drag the end of line of the relationship to an empty space on the canvas and click the mouse button.

A new dialog will come up. From the dropdown choose Target Entity Type API_BUSINESS_PARTNER-A_BusinessPartner. Change the suggested Property Name to BusinessPartner. Leave all the other suggestions (Association and To-One) as they are and press Create

You will now see the final data model:

Summary

You've now added a reference to a data model / service in an S/4 HANA Cloud backend system to your new data model.

Continue to - Exercise 2