No calculation schema found

What causes this issue?

The system was not able to find a price calculation schema for
purchasing organization &V2& or or vendor &V1&.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Maintain the schema determination facility in Customizing for
<ZK>Purchasing</> under <ZK>Conditions -> Price Determination -> Define
Schema Determination</>.

Error message extract from SAP system. Copyright SAP SE.