Pass on lot size" function not supported in costing runs

hi when i am doing cost estimate through ck40n i am getting following error.

Pass on lot size" function not supported in costing runs

Message no. CK463

Diagnosis

You have selected costing variant PPC1 for the costing run. The Pass on lot size indicator is set in this costing variant. Costing variants in which this indicator is set cannot be used by the costing run.

System Response

The costing run is not created.

Procedure

You have the following options:

Reset the Pass on lot size indicator in costing variant PPC1 so that the lot size is not passed on.

Use a different costing variant in which the Pass on lot size indicator is not set.

if any one had found any same king of error please help me in fix it.

thanks

kareem