File name template does not contain the pattern '######'

What causes this issue?

When checking the profile parameter FN_AUDIT, the system determined that
the current value is invalid, since it does not contain a character
string "######". The value (file name) must contain exactly six (6)
number signs (#) in succession, since these are replaced by the system
with a sequence number.

System Response

Since the profile parameter FN_AUDIT is instance-specific, the result of
the parameter check also contains the instance name. You cannot save the
kernel parameters while there are errors in the profile parameters.

How to fix this error?

Set the value of the profile parameter FN_AUDIT in such a way that it
contains the character string "######" after the character string
"++++++++". You can maintain profile parameters with transaction RZ10.
Examples: audit_++++++++_###### or AUDIT++++++++_######.AUD

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.