With JCO version 1.1, I was able establish connection to SAP system with external java application. However, since I upgraded, using same user id, and SAP system, I receive error message:
You are not authorized to logon to the target system (error code 1). com.sap.mw.jco.JCO$Exception: (103) RFC_ERROR_LOGON_FAILURE: You are not authorized to logon to the target system (error code 1).
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