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Apr 24, 2014 at 11:36 PM

FTPS: Syntax error, command unrecognized.

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Hi people.

We have a problem with a SAP PI 7.10 SP06 about the File communication channels sender with FTPS protocol.

The problems started with the substitution of the FTP server (Exel from Windows version to Linux one) on customer side.

The cc fails with the error

Message processing failed. Cause: com.sap.engine.interfaces.messaging.api.exception.MessagingException: Error when getting an FTP connection from connection pool: com.sap.aii.af.lib.util.concurrent.ResourcePoolException: Unable to create new pooled resource: FTPEx: Syntax error, command unrecognized.

Simulating the SAP PI activity via Filezilla, we obtain a similar error if we send the command

OPTS MLST size;modify;type;

Response 501 Syntax error in parameter or arguments.

instead of

OPTS MLST Size;Modify;Type; (pay attention to the case)

Response 200 Command OPTS okay

On server size (Exel Linux version) the wrong command OPTS MLST size;modify;type; is in any case successfully executed but the response is of error.

THE QUESTION

If is it confirmed the wrong case ipothesys, the alternatives that we are considering are:

a) is it possible to update the command string sent by SAP PI?

b) is it possible to ignore the Exel response for the cc on AAE?

Thanks a lot for your support.

Nicola