Mixed Costing scp issue

Hi

We are using mixed costing. When calculating the scp for the next year, following happens.

A material both made in house and bought externally is calculated according to mixed costing with procurement alternatives production and purchasing. The scp calculation now takes the info record for the purchasing part, where we need the planned price 1 value.

Does any of you know how I can steer this in this way ?

(Meanwhile I found a workaround to set for just 01.01 the value of the plan price 1 in the inforecord, but that is no good solution.)

Hope you can help,

kind regards

JeVe