Maintain the settlement rule of the sender

What causes this issue?

Either the settlement rule for the sender does not exist, or it is
incomplete.
The <GL:Settlement_rule>settlement rule</> must contain settlement
parameters and at least one valid distribution rule. A distribution
rule is valid for a settlement run if
The settlement period is in the validity interval for the rule, and -
if a settlement type was specified during settlement -
The <GL:Settlement_type>settlement type</> corresponds to the rule for
the specified settlement type.
Settlement type FUL -> The system selects all rules with the FUL and
PER settlement types.
Settlement type PER -> The system selects all rules with the PER
settlement type.
The settlement share is set for the rule (percentage, equivalence
number).

How to fix this error?

The settlement rule belongs to the sender master data, where you can
maintain it.
Internal order
<DS:TRAN.KO02>Proceed</>
CO Production order
<DS:TRAN.KKF2>Proceed</>
Project
<DS:TRAN.CJ12>Proceed</>
Cost object
<DS:TRAN.KKP2>Proceed</>
Network
<DS:TRAN.CN22>Proceed</>
QM Order
<DS:TRAN.KKF2>Proceed</>
PM Order
<DS:TRAN.IW32>Proceed</>
Production order
<DS:TRAN.CO02>Proceed</>
Process order
<DS:TRAN.COR2>Proceed</>
Sales order
<DS:TRAN.VA02>Proceed</>
If you do not want to settle a particular object, then make the
corresponding settings in the settlement profile.

Error message extract from SAP system. Copyright SAP SE.