At first step, create a SAP user is the SAP system
SAP user profiles can be reached via Systems→SAP users
Create a new profile using the “Add” button
Once created, the user profile can be selected in the connector form
Note: A SAP User is by default associated with only one Group (Company). You can explicitly set a SAP User to be cross companies.
The effect is that it will be selectable from connectors of any company.
The corresponding user must be created in SAP along with the appropriate authorizations.
Use SU01 and PFCG transaction to do so. You can download the authorization profile in Admin→Admin configurartion→Upload/Download