Mapping sets for Project Costing

Summary:

 Project Class code-based mapping sets are used to derive Balancing segment values for Project Costing. What should be the best practice? Is it necessary to create separate mapping sets for Payables, SCM and Projects or can one mapping set be shared 

Content (required):

Shared Mapping sets vs Individual Mapping sets

Version (include the version you are using, if applicable):

21D

Code Snippet (add any code snippets that support your topic, if applicable):