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Create OAuth communication system and user

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Create OAuth communication system and user
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Create OAuth communication system and user

01/17/2019

Create a communication system and generate a system user within the communication system.

You will learn

  • How to create a OAuth communication system and user
  • How to specify the SAP Web IDE link from SAP Cloud Platform
  • How to upload the certificate

This tutorial focuses on creating an OAuth communication systems. To create such an OAuth communication system, you must insert the link address from SAP Cloud Platform, add your host name, edit and upload a certificate so that the S/4HANA system trusts your SAP Cloud Platform subaccount.


Step 1: Open communication system application

Navigate to Communication Systems tile to start the application.

Open communication system application
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Step 2: Create communication system

Create a new communication system by clicking New.

Create communication system
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Step 3: Add system ID and system name

By adding a system ID, system name and clicking Create, you are able to register a new communication system.

Add system ID and system name
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Step 4: Get SAP Web IDE URL

Switch to your SAP Cloud Platform cockpit, go to Services and select SAP Web IDE. Copy the link address of Go to Service paste it to some text editor and remove https:// from that SAP Web IDE’s URL. This will be needed in the creation process of the communication system.

Get SAP Web IDE URL
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Step 5: Set SAP Web IDE URL as host name

Switch back to the communication system maintenance in SAP S/4HANA Cloud system. Set SAP Web IDE’s URL without http:// that you got before as Host Name of the communication system.
Set SAP Web IDE URL as host name
[DONE]

Step 6: Add inbound communication user to system

Click + to add a user for inbound communication. Inbound communication means that the here defined system is used from a communication partner to call from external into the S/4HANA system. Doing this, the user that will be added next has to be used to get authorized.

Add inbound communication user to system
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Step 7: Create communication user

Click New User to create one.

Create communication user
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Step 8: Add user data and password

Enter a user name and description for your user. Give your user a password and click Create.

Add user data and password
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Step 9: Confirm user to add

The new user will be generated by clicking OK.

Confirm user to add
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Step 10: Get SAP Cloud Platform subaccount's signing certificate

Switch to your SAP Cloud Platform subaccount. Open trust settings, copy all data from the Signing Certificate field ( in windows: click inside and press CTRL+a) and paste it to some text editor.

Get SAP Cloud Platform subaccount’s signing certificate
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Step 11: Create certificate file

Take your downloaded metadata file from SAP Cloud Platform and open it with an editor of your choice.

Create certificate from metadata
  1. In the text editor file that you pasted SAP Cloud Platform subaccount’s signing certificate into before, add a line with value "-----BEGIN CERTIFICATE-----" in front of the signing certificate and a line with value "-----END CERTIFICATE-----" after.
        -----BEGIN CERTIFICATE-----
             <SIGNING_CERTIFICATE>
        -----END CERTIFICATE-----
    
  2. Save your changes as .cer file.
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Step 12: Upload signing certificate to communication system

Go back to your SAP S/4HANA Cloud system and open your created communication system draft. Edit your draft and enable it for OAuth 2.0 by checking the enabled box. Then upload the certificate by clicking upload signing certificate. Take the provider name from the CN attribute of the Signing certificate subject, that appears after upload and enter it as the provider name. Click Save.

Upload signing certificate to communication system

With this step, you’ve uploaded your certificate to your communication system. Now your S/4HANA system trusts your SAP Cloud Platform subaccount. The picture should also show the execution sequence.
[DONE]

Step 13: Test yourself
Where do you get the link for your host name?
×

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