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Administrator access to the SAP S/4HANA Cloud tenant is required to create Communication Arrangements and Communication Users. Trial systems do NOT support Communication Arrangements — a paid or partner-provisioned sandbox is required.

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Locate your System ID

The System ID is the 6-character tenant prefix in your S/4HANA Cloud URL.

1

Find the System ID

Open your SAP S/4HANA Cloud Fiori launchpad URL in a browser.

  • Look at the URL, e.g. https://my123456.s4hana.cloud.sap/sap/fiori
  • The System ID is the 6 digits after my and before .s4hana.cloud.sap — in the example: 123456
  • Enter ONLY the digits (no my prefix, no .s4hana.cloud.sap suffix) into the System ID field

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Create the Communication User

The Communication User is the technical identity that issues the OAuth credentials.

1

Open Maintain Communication Users

In the Fiori launchpad, search for and open the Maintain Communication Users app.

2

Create a new user

Click New to create a Communication User.

  • Enter a User Name (e.g. STACKONE_INTEGRATION)
  • Click Propose Password and copy the generated password — it will become the OAuth Client Secret
  • Click Create

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Create the Communication Arrangements

Each business API is enabled by a Communication Arrangement bound to a Scenario.

1

Open Communication Arrangements

Search for and open the Communication Arrangements app.

2

Create arrangement for Business Partner

Click New, enter Scenario SAP_COM_0008, give it an Arrangement Name, then click Create.

  • Under Inbound Communication, set Authentication Method to User ID and Password — then switch the dropdown to OAuth 2.0
  • Assign the Communication User you created earlier
  • Save the arrangement
3

Create arrangement for Sales Order

Repeat for Scenario SAP_COM_0109 (Sales Order).

4

Create arrangement for Product

Repeat for Scenario SAP_COM_0009 (Product Master).

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Retrieve OAuth credentials

The OAuth Client ID and Client Secret come from the Communication Arrangement.

1

Open one of the arrangements

In Communication Arrangements, open the SAP_COM_0008 arrangement.

2

View OAuth 2.0 details

Under Inbound Communication, click the OAuth 2.0 Details link.

  • Copy the OAuth 2.0 Client ID — this is your Client ID
  • The Client Secret is the password you generated when creating the Communication User
  • Do not regenerate the password — it would invalidate all existing arrangements

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Verify Communication Arrangement is active

Each arrangement must be active for the OAuth client to access the corresponding APIs.

1

Confirm status

In Communication Arrangements, the Status column for each of SAP_COM_0008, SAP_COM_0009, and SAP_COM_0109 should read Active.

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Linking the Account from the Hub

1

Navigate to the Hub

Use one of the three Linking Account Methods to access the Hub.
2

Connect

  • Click Connect
  • If applicable, the provider will redirect you to a sign-in or authorization page. Complete the provider’s authorization flow.
  • Once authorization is successful, you will see a confirmation popup

If the account linking is successful, you will see the newly linked account in your Accounts page.