Issue with File transfer(File to File)

Hi Experts,

Scenario- File to File having a RFC lookup(This RFC for only adding the additional data from ECC)

Interface is running from last one year from last few months we are facing an issue with Out Put file is partially generating(we are trying to processing the around 50000 records some times we are not getting the half of the Records) .This is happening only monthly once or twice except this interface is working fine.

Monitoring- we are not finding any trace in File CC monitoring and RFC CC monitoring all are showing successful messages

Thanks

Praveen Kumar