https://userapps.support.sap.com/sap/support/knowledge/en/3383628
3383628 - SAP Ariba Invoicing unsubscription | SAP Knowledge Base Article
When the user is trying to unsubscribe from SAP Ariba Invoicing, the following error message appears: "The connected system could not be terminated because of...
sap aribaknowledge baseinvoicingunsubscriptionarticle