Error trying to write file (OPEN_DATASET)

What causes this issue?

An error occurred while an outbound file was being opened with 'OPEN
DATASET'. The name of the outbound file is:
&v1&&v2&

How to fix this error?

RESET N1
Check whether the directory is available and visible to the SAP system.
If so, check whether enough capacity exists in the file system.
If the file already exists, please check the authorization and the
owner.

Error message extract from SAP system. Copyright SAP SE.