How to connect Appian to SAP with Smart Service (Invoke SAP BAPI)?

I have problems when configuring the process model component called Invoke SAP BAPI.
The result is the following error....


The scsExternalSystemKey is configured like this...


Finally, what would be the SAP data corresponding to Client Number and System Number? I understand these are ClientNumber = Mandante and SystemNumber = ID de Sistema (in Spanish)

PD: The credentials are the same as those used to enter SAP through its interface

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