Message SAP /SAPDMC/LSMW103 - File '&' cannot be opened (return code &)

Diagnosis
SY-SUBRC = 0: File opened.
SY-SUBRC = 8: File could not be opened.

Procedure
Possible error causes:
File must be accessible from the current application server. You cannotedit files on the current presentation server (personal computer orworkstation).