The error SOSJADE_E_0100 should be raised exclusively if no source files have been found

Current Situation
The error message
SOSJADE_E_0100: No filename found which match the criteria as specified using the regular expression
occurs in cases when source files have been found but no file was successfully transferred. In this case the error message is wrong.

Desired Behavior
The error message
SOSJADE_E_0100: No filename found which match the criteria as specified using the regular expression
should exclusively occur if no source files have been found.
In case that no file was successfully transferred then an error message should be logged that states why the transfer failed.