RFC_ERROR_LOGON_FAILURE

Hi Experts,

I have a BPM scenario IDoc(ORDCHG.ORDERS05) to cXML, the message caught the below error

com.sap.aii.af.ra.ms.api.DeliveryException: error while processing message to remote 
system:com.sap.aii.af.rfc.core.client.RfcClientException: could not get a client from JCO.Pool: 
com.sap.mw.jco.JCO$Exception: (103) RFC_ERROR_LOGON_FAILURE: Name or password is incorrect. Please re-enter

the scenario was running OK before and also the RFC receiver comm channel is having green status now.

Please suggest how to resolve and resend the message.

Thanks,

MK