CKMLCP - Error Message No. C+816

Hi Experts,

While executing Multilevel Price Determination, i am facing following error:

First determine price (m-lvl) for input material 50000014 , valuation area 1001

Message No. C+816

Diagnosis

Material 50000014 with valuation type  in valuation area 1001 was used as an input material in the period. You can perform multi-level price determination for the corresponding output material only if the input material has the status Price determined multi-level, Closing entry reversed, or Closing entry completed.
The input material, though, has status Price Determined (Single-Level).

System Response

The system does not allow the multi-level price determination.

Procedure

Perform multi-level price determination for the input material.

Please guide how to fix that issue? We are using ECC 6.40.

Regards,

Zain Bashir