3405302 - Polling files by using expression in File Name from SFTP subdirectories does not work despite Include Subdirectories is enabled in Cloud Integration

Cloud Integration sender SFTP adapter is configured with following specification:

- Include Subdirectories flag is enabled

- File Name is used with expression, but polling from subdirectories with some of the file name pattern works, some other patterns do not work, e.g.: 

• not working file name pattern on subdirectories: *.txt, **.TXT, *?*.txt, *M*.TXT, *135.TXT
• working file name pattern on subdirectories: *MT*.TXT, *MT940*.txt

- if directory is changed to a specific subdirectory, polling of the files also work with the previously not working file name pattern, this also verifies there is no permission or role issue on SFTP server side.

- extension should be uppercase if it is used on SFTP server, should be lowercase if that is used in SFTP server file names

- using Change Directories Stepwise option does not have effect on this

SAP Cloud Integration 

SAP Integration Suite  

Flatten File Names, sftp , sftp server, sftp adapter, sftp sender, Cloud Integration, Polling, expression, File Name, SFTP subdirectories, subdirectories, subdirectory, Include Subdirectories, CPI, integration suite,  , KBA , LOD-HCI-PI-CON-SOAP , SOAP Adapter , Problem