Error in File Receiver Channel

Dear All,

I am Getting below error in File Receiver Channel.

Message processing failed. Cause: com.sap.aii.af.ra.ms.api.RecoverableException: Error when getting an FTP connection from connection pool: com.sap.aii.af.service.util.concurrent.ResourcePoolException: Unable to create new pooled resource: FTPEx: User ABC cannot log in.

Regards,

Manikandan