Use file mask (-filemask switch in scripting) to both exclude the *.filepart files and too small (?) files.
https://winscp.net/eng/docs/file_mask

Hello,
My Requirement is to monitor the remote pc in a regular interval and wait for the complete file to be transferred in the remote pc. Once the remote pc has the required file completely transferred, then I need to initiate a synchronize between remote and local pc.
For this my thought was to check on the file name, bcz file name with filepart mean transfer is still in progress, and filename without filepart mean complete transfer is successful. Also as secondary condition I will validate the size of the file and map it with threshold value. Once confirmed, then initiate file transfer.
To do this entire flow, I need help in filtering the filename and also proper syntax or example on how to use size criteria.
Please help me to cross this hurdle.
Thanks.