SAP Message RMSRCPAPI031 - No relationship has been defined between &1 and &2

Diagnosis
You cannot create a relationship between these two recipe types, sincethis was not defined in Customizing.

System Response
The system does not allow you to create the relationship.

Procedure
Choose a recipe type that was defined for this purpose in Customizingfor iPPE, or extend your Customizing settings for integrated Productand Process Engineering (iPPE) by defining furtherrelationship types.