SAP Message PS001 - Source file could not be opened

Diagnosis
An error occurred when opening the source file for reading.
File name: &V2&
Directory: &V3&
Error code: &V1& &V4&
Definition of the error codes:
03 RFC system failure
04 RFC communication failure
11 invalid EPS subdirectory
12 sapgparam failed
13 build directory failed
14 no authorization
15 build path failed
16 open failed
17 read directory failed
18 read attributes failed

System Response
Transmission was terminated.

Procedure
Eliminate the cause of the error and restart the transmission.