Released billing documents for accounting with error KE 349

Hi experts,

could you help me with this error in VF02?

"Valuation with material cost estimate: error with product "8T3ZGFC2ZZZZ18"

Message no. KE349

Diagnosis

In Profitability Analysis (CO-PA), the system tried to valuate a line item using the future standard cost estimate.

In order to determine the future plan period, the system needs to read the valuation segment of the material master.

The system has found that the future plan period is not filled for product "8T3ZGFC2ZZZZ18" in plant "HL01".

Display material (View: Costing)

The system looked for the material cost estimate using costing key "Z02", as defined in the Customizing settings for CO-PA.

System Response

The document cannot be processed.

Procedure

Contact your system administrator.

"

KE4J

Way this error exist? What should I do? Do You have anybody idea?

Thanks