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Overview

This sample provides a Serverless Function configured to call the Material Stock API provided by S/4HANA using the SAP Cloud SDK. This function is exposed as an un-authenticated API.

This sample demonstrates how to:

  • Use the S/4HANA API.
  • Create a development Namespace in the Kyma runtime.
  • Deploy a Serverless Function and an APIRule.

Prerequisites

  • SAP BTP, Kyma runtime instance
  • kubectl configured to use the KUBECONFIG file downloaded from the Kyma runtime
  • S/4HANA System

Steps

Configure the System Connectivity

  1. Register an SAP S/4HANA Cloud System in an SAP BTP global account.
  2. Configure the Entitlements for the SAP BTP subaccount.

Deploy the Function

  1. Create a new dev Namespace:
kubectl create namespace dev
  1. Apply the Deployment:
kubectl -n dev apply -f ./k8s/deployment.yaml

Provision a ServiceInstance

Within the dev Namespace:

  1. Choose SAP S/4HANA Cloud Extensibility.
  2. Choose Add.
  3. Choose the api-access plan.
  4. Choose the Add Parameters option and provide the communication arrangement JSON. For the material stock example, use the following snippet. Make sure to adjust the systemName parameter.
{
  "systemName": "{System Name}",
  "communicationArrangement": {
    "communicationArrangementName": "INBOUND_COMMUNICATION_ARRANGEMENT",
    "scenarioId": "SAP_COM_0164",
    "inboundAuthentication": "BasicAuthentication"
  }
}
  1. Choose Create.

Bind a ServiceInstance to the Function

  1. Open the s4hana-materialstock Function.
  2. Choose the Configuration tab.
  3. In the Service Bindings pane, choose the Create Service Binding option.
  4. Choose the ServiceInstance for the S/4HANA system.
  5. Choose Create.
  6. Verify that the Function is up and running:
kubectl -n dev get function s4hana-materialstock

Call the API

Use the APIRule:

  • https://s4hana-materialstock.{cluster-domain}/orders
  • https://s4hana-materialstock.{cluster-domain}/orders/10000001