Do we have any standard guidelines about the parameters to considers when we should create a new case type or when should have the child process as sub process. 

I understand some of the parameters are -

• parallelism between processes
• user group who own and work on processes 
• data sharing between processes
• data management during the processes  
• security and privilege on the work type

But do we have an exhaustive list of parameters which we should always consider before deciding in favor of a new case type in any implementation ?

Also Is there a recommendation ( with quantification i.e. numbers ) which can serve the purpose as a defined guideline on this topic 

To explain previous statement , lets say -  X% of parallelism between processes combined with Y% of data sharing(with updates) is a definite use case for a new case type otherwise sub process ? 

P.S. - With optimistic locking / data pages and case specialization capabilities - the first four parameters are not very definitive. 

***Updated by Moderator: Vidyaranjan. Removed user added FAQ and Ask the Expert tags. Apologies for confusion, shouldn't have been an end-user option***