We are working on multionode production environment. Product Version : Pega 6.3 SP1 As part of daily nightly batch file listener configured in multinode environment process batch of files and it create new case/update the existing case based on the existing code logic. Whenver we receive more than 1000 files the file listener miss to process some of the files. The file listener picks the file and moving to completed folder with additional numbers appended with that name. After all the files processed, we used to generate a report with the number of files processed. It missing few files. We used to check all the files available in completed folder and do the reconcilition comapring with the log table for missing files and process the files manually by pushing it again in landing zone. We have another file listener which also process multiple files and it didnt have any issue. Appreciate your view on this what could be the reason.