Message type: E = Error
Message class: CNVMBTRFC - Messages used in RFC Management and its objects
Message number: 021
Message text: RFC Destination applied. Please enter a password. If wanted change user.
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The SAP error message CNVMBTRFC021 typically occurs in the context of Remote Function Call (RFC) connections when the system is unable to authenticate a user due to missing or incorrect credentials. This error indicates that the RFC destination requires a password to establish a connection, and the user has not provided one or the credentials are incorrect.
Cause: Missing Password: The RFC destination is configured to require a password, but it has not been provided. Incorrect Credentials: The username or password provided for the RFC destination is incorrect. User Change: The user specified in the RFC destination may need to be changed, and the new user requires a password.
Configuration Issues: There may be issues with the configuration of the RFC destination in transaction SM59.
Solution: Check RFC Destination Configuration: Go to transaction SM59. Locate the RFC destination that is causing the issue. Check the settings under the "Logon & Security" tab to ensure that the username and password are
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