WBS Settlement into G/L Account using CJ88

Hi Guys,

While executing the WBS settlement into G/L account which is a cost element system is giving the error message: "Account XXXX requires an assignment to a CO object".

We have also maintained the Cost Center in details tab of settlement rule.

Requirement: We do not want to assign default account assignment in KA02 or OKB9.

Kindly suggest how to assign the account assignment in settlement rule only .

Thanks and Regards,
Sarvendra Negi