Directory (DIR_TRANS)/tmp does not contain any SAR files

What causes this issue?

Transaction SMLT can be used to unpack SAP files only
if they are in directory $(DIR_TRANS)/tmp.

System Response

Reason &v1&
1: Wrong EPS subdirectory
2: Error in SAPGPARAM
4: No authorization
5: Error when accessing the directory
7: No patches in the directory

How to fix this error?

Copy the SAP files in question to the directory
$(DIR_TRANS)/tmp and, if necessary, modify the authorizations for the
user
SIDADM.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.