SAP Message WRF_APC744 - Purchasing organization(s) not allowed for distribution chain &1/&2

Diagnosis
Sales price calculation can only be carried out successfully when thesystem can determine a valid purchasing price.
For distribution chain &V1&/&V2&, a valid purchasing price means a pricecreated for one of the purchasing organizations assigned to referenceplant &V3& (in other words: for one of the "allowed" purchasingorganizations for this distribution chain).
Example: When you create purchasing prices for planned materialsin a purchasing list, these prices are created in the purchasingorganization to which the purchasing list is assigned. During plannedmaterial release, the system tries to find a purchasing price for theplanned material in one of the "allowed" purchasing organizations. Thismessage is sent if the system could not find such a purchasing price.

Procedure
If this message appears during planned material release, verify theorganizational assignment of the purchasing lists to which the plannedmaterial is assigned.
Ideally, assign a purchasing organization/distribution chain to apurchasing list in such a way that the purchasing organization is"allowed" for the distribution chain. This means it is one of thepurchasing organizations assigned to the reference plant of thedistribution chain.
If reference plant &V3& and the purchasing organizations where pricesexist belong to different company codes, pay special attention to theorganizational assignment of your purchasing lists. A cross-companyprocess might not be what you intended to carry out.
Company code assignment: &V4&
Another option is to verify the purchasing organizations assigned to thereference plant &V3& in Customizing: Assignpurchasing organization to plant. Add the corresponding purchasingorganization if you need to do a planning for this combination ofpurchasing organization/distribution chain.